diff --git a/src/main/java/com/massivecraft/massivecore/CaseInsensitiveComparator.java b/src/main/java/com/massivecraft/massivecore/CaseInsensitiveComparator.java
new file mode 100644
index 00000000..3715dbb7
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/CaseInsensitiveComparator.java
@@ -0,0 +1,24 @@
+package com.massivecraft.massivecore;
+
+import java.util.Comparator;
+
+public class CaseInsensitiveComparator implements Comparator<String>
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static CaseInsensitiveComparator i = new CaseInsensitiveComparator();
+	public static CaseInsensitiveComparator get() { return i; }
+
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+
+	@Override
+	public int compare(String o1, String o2)
+	{
+		return String.CASE_INSENSITIVE_ORDER.compare(o1, o2);
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/MassiveCore.java b/src/main/java/com/massivecraft/massivecore/MassiveCore.java
index 0b28d727..962ddef9 100644
--- a/src/main/java/com/massivecraft/massivecore/MassiveCore.java
+++ b/src/main/java/com/massivecraft/massivecore/MassiveCore.java
@@ -15,14 +15,29 @@ import org.bukkit.inventory.PlayerInventory;
 import com.massivecraft.massivecore.adapter.InventoryAdapter;
 import com.massivecraft.massivecore.adapter.ItemStackAdapter;
 import com.massivecraft.massivecore.adapter.JsonElementAdapter;
+import com.massivecraft.massivecore.adapter.MassiveListAdapter;
+import com.massivecraft.massivecore.adapter.MassiveMapAdapter;
+import com.massivecraft.massivecore.adapter.MassiveSetAdapter;
+import com.massivecraft.massivecore.adapter.MassiveTreeSetAdapter;
 import com.massivecraft.massivecore.adapter.ModdedEnumTypeAdapter;
 import com.massivecraft.massivecore.adapter.PlayerInventoryAdapter;
+import com.massivecraft.massivecore.adapter.MassiveTreeMapAdapter;
 import com.massivecraft.massivecore.adapter.UUIDAdapter;
 import com.massivecraft.massivecore.cmd.massivecore.CmdMassiveCore;
 import com.massivecraft.massivecore.cmd.massivecore.CmdMassiveCoreBuffer;
 import com.massivecraft.massivecore.cmd.massivecore.CmdMassiveCoreCmdurl;
 import com.massivecraft.massivecore.cmd.massivecore.CmdMassiveCoreStore;
 import com.massivecraft.massivecore.cmd.massivecore.CmdMassiveCoreUsys;
+import com.massivecraft.massivecore.collections.MassiveList;
+import com.massivecraft.massivecore.collections.MassiveListDef;
+import com.massivecraft.massivecore.collections.MassiveMap;
+import com.massivecraft.massivecore.collections.MassiveMapDef;
+import com.massivecraft.massivecore.collections.MassiveSet;
+import com.massivecraft.massivecore.collections.MassiveSetDef;
+import com.massivecraft.massivecore.collections.MassiveTreeMap;
+import com.massivecraft.massivecore.collections.MassiveTreeMapDef;
+import com.massivecraft.massivecore.collections.MassiveTreeSet;
+import com.massivecraft.massivecore.collections.MassiveTreeSetDef;
 import com.massivecraft.massivecore.event.EventMassiveCoreUuidUpdate;
 import com.massivecraft.massivecore.fetcher.Fetcher;
 import com.massivecraft.massivecore.fetcher.IdAndName;
@@ -88,6 +103,18 @@ public class MassiveCore extends MassivePlugin
 		.registerTypeAdapter(Inventory.class, InventoryAdapter.get())
 		.registerTypeAdapter(PlayerInventory.class, PlayerInventoryAdapter.get())
 		.registerTypeAdapter(PS.class, PSAdapter.get())
+		
+		.registerTypeAdapter(MassiveList.class, MassiveListAdapter.get())
+		.registerTypeAdapter(MassiveListDef.class, MassiveListAdapter.get())
+		.registerTypeAdapter(MassiveMap.class, MassiveMapAdapter.get())
+		.registerTypeAdapter(MassiveMapDef.class, MassiveMapAdapter.get())
+		.registerTypeAdapter(MassiveSet.class, MassiveSetAdapter.get())
+		.registerTypeAdapter(MassiveSetDef.class, MassiveSetAdapter.get())
+		.registerTypeAdapter(MassiveTreeMap.class, MassiveTreeMapAdapter.get())
+		.registerTypeAdapter(MassiveTreeMapDef.class, MassiveTreeMapAdapter.get())
+		.registerTypeAdapter(MassiveTreeSet.class, MassiveTreeSetAdapter.get())
+		.registerTypeAdapter(MassiveTreeSetDef.class, MassiveTreeSetAdapter.get())
+		
 		.registerTypeAdapterFactory(ModdedEnumTypeAdapter.ENUM_FACTORY);
 	}
 	
diff --git a/src/main/java/com/massivecraft/massivecore/adapter/MassiveListAdapter.java b/src/main/java/com/massivecraft/massivecore/adapter/MassiveListAdapter.java
new file mode 100644
index 00000000..1a4a097d
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/adapter/MassiveListAdapter.java
@@ -0,0 +1,38 @@
+package com.massivecraft.massivecore.adapter;
+
+import java.lang.reflect.Type;
+import java.util.Collection;
+
+import com.massivecraft.massivecore.collections.MassiveList;
+import com.massivecraft.massivecore.collections.MassiveListDef;
+import com.massivecraft.massivecore.xlib.gson.JsonDeserializationContext;
+import com.massivecraft.massivecore.xlib.gson.JsonElement;
+
+public class MassiveListAdapter extends MassiveXAdapter<MassiveList<?>>
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static MassiveListAdapter i = new MassiveListAdapter();
+	public static MassiveListAdapter get() { return i; }
+
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	@Override
+	public MassiveList<?> create(Object parent, boolean def, JsonElement json, Type typeOfT, JsonDeserializationContext context)
+	{
+		if (def)
+		{
+			return new MassiveListDef((Collection)parent);
+		}
+		else
+		{
+			return new MassiveList((Collection)parent);
+		}
+	}
+	
+}
diff --git a/src/main/java/com/massivecraft/massivecore/adapter/MassiveMapAdapter.java b/src/main/java/com/massivecraft/massivecore/adapter/MassiveMapAdapter.java
new file mode 100644
index 00000000..cc62ba52
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/adapter/MassiveMapAdapter.java
@@ -0,0 +1,38 @@
+package com.massivecraft.massivecore.adapter;
+
+import java.lang.reflect.Type;
+import java.util.Map;
+
+import com.massivecraft.massivecore.collections.MassiveMap;
+import com.massivecraft.massivecore.collections.MassiveMapDef;
+import com.massivecraft.massivecore.xlib.gson.JsonDeserializationContext;
+import com.massivecraft.massivecore.xlib.gson.JsonElement;
+
+public class MassiveMapAdapter extends MassiveXAdapter<MassiveMap<?, ?>>
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static MassiveMapAdapter i = new MassiveMapAdapter();
+	public static MassiveMapAdapter get() { return i; }
+
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	@Override
+	public MassiveMap<?,?> create(Object parent, boolean def, JsonElement json, Type typeOfT, JsonDeserializationContext context)
+	{
+		if (def)
+		{
+			return new MassiveMapDef((Map)parent);
+		}
+		else
+		{
+			return new MassiveMap((Map)parent);
+		}
+	}
+	
+}
diff --git a/src/main/java/com/massivecraft/massivecore/adapter/MassiveSetAdapter.java b/src/main/java/com/massivecraft/massivecore/adapter/MassiveSetAdapter.java
new file mode 100644
index 00000000..b41a38ae
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/adapter/MassiveSetAdapter.java
@@ -0,0 +1,38 @@
+package com.massivecraft.massivecore.adapter;
+
+import java.lang.reflect.Type;
+import java.util.Collection;
+
+import com.massivecraft.massivecore.collections.MassiveSet;
+import com.massivecraft.massivecore.collections.MassiveSetDef;
+import com.massivecraft.massivecore.xlib.gson.JsonDeserializationContext;
+import com.massivecraft.massivecore.xlib.gson.JsonElement;
+
+public class MassiveSetAdapter extends MassiveXAdapter<MassiveSet<?>>
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static MassiveSetAdapter i = new MassiveSetAdapter();
+	public static MassiveSetAdapter get() { return i; }
+
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	@Override
+	public MassiveSet<?> create(Object parent, boolean def, JsonElement json, Type typeOfT, JsonDeserializationContext context)
+	{
+		if (def)
+		{
+			return new MassiveSetDef((Collection)parent);
+		}
+		else
+		{
+			return new MassiveSet((Collection)parent);
+		}
+	}
+	
+}
diff --git a/src/main/java/com/massivecraft/massivecore/adapter/MassiveTreeMapAdapter.java b/src/main/java/com/massivecraft/massivecore/adapter/MassiveTreeMapAdapter.java
new file mode 100644
index 00000000..38391915
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/adapter/MassiveTreeMapAdapter.java
@@ -0,0 +1,48 @@
+package com.massivecraft.massivecore.adapter;
+
+import java.lang.reflect.Type;
+import java.util.Map;
+
+import com.massivecraft.massivecore.collections.MassiveTreeMap;
+import com.massivecraft.massivecore.collections.MassiveTreeMapDef;
+import com.massivecraft.massivecore.xlib.gson.JsonDeserializationContext;
+import com.massivecraft.massivecore.xlib.gson.JsonElement;
+
+public class MassiveTreeMapAdapter extends MassiveXAdapter<MassiveTreeMap<?, ?, ?>>
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static MassiveTreeMapAdapter i = new MassiveTreeMapAdapter();
+	public static MassiveTreeMapAdapter get() { return i; }
+
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	@Override
+	public MassiveTreeMap<?, ?, ?> create(Object parent, boolean def, JsonElement json, Type typeOfT, JsonDeserializationContext context)
+	{
+		Object comparator = getComparator(typeOfT);
+		if (def)
+		{
+			return new MassiveTreeMapDef(comparator, (Map)parent);
+		}
+		else
+		{
+			return new MassiveTreeMap(comparator, (Map)parent);
+		}
+	}
+	
+	// -------------------------------------------- //
+	// GET COMPARATOR
+	// -------------------------------------------- //
+	
+	public static Object getComparator(Type typeOfT)
+	{
+		return getNewArgumentInstance(typeOfT, 2);
+	}
+	
+}
diff --git a/src/main/java/com/massivecraft/massivecore/adapter/MassiveTreeSetAdapter.java b/src/main/java/com/massivecraft/massivecore/adapter/MassiveTreeSetAdapter.java
new file mode 100644
index 00000000..492c1d53
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/adapter/MassiveTreeSetAdapter.java
@@ -0,0 +1,48 @@
+package com.massivecraft.massivecore.adapter;
+
+import java.lang.reflect.Type;
+import java.util.Collection;
+
+import com.massivecraft.massivecore.collections.MassiveTreeSet;
+import com.massivecraft.massivecore.collections.MassiveTreeSetDef;
+import com.massivecraft.massivecore.xlib.gson.JsonDeserializationContext;
+import com.massivecraft.massivecore.xlib.gson.JsonElement;
+
+public class MassiveTreeSetAdapter extends MassiveXAdapter<MassiveTreeSet<?, ?>>
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static MassiveTreeSetAdapter i = new MassiveTreeSetAdapter();
+	public static MassiveTreeSetAdapter get() { return i; }
+
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	@Override
+	public MassiveTreeSet<?, ?> create(Object parent, boolean def, JsonElement json, Type typeOfT, JsonDeserializationContext context)
+	{
+		Object comparator = getComparator(typeOfT);
+		if (def)
+		{
+			return new MassiveTreeSetDef(comparator, (Collection)parent);
+		}
+		else
+		{
+			return new MassiveTreeSet(comparator, (Collection)parent);
+		}
+	}
+	
+	// -------------------------------------------- //
+	// GET COMPARATOR
+	// -------------------------------------------- //
+	
+	public static Object getComparator(Type typeOfT)
+	{
+		return getNewArgumentInstance(typeOfT, 1);
+	}
+	
+}
diff --git a/src/main/java/com/massivecraft/massivecore/adapter/MassiveXAdapter.java b/src/main/java/com/massivecraft/massivecore/adapter/MassiveXAdapter.java
new file mode 100644
index 00000000..280c37b2
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/adapter/MassiveXAdapter.java
@@ -0,0 +1,146 @@
+package com.massivecraft.massivecore.adapter;
+
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.util.Collection;
+import java.util.Map;
+
+import com.massivecraft.massivecore.collections.Def;
+import com.massivecraft.massivecore.xlib.gson.JsonDeserializationContext;
+import com.massivecraft.massivecore.xlib.gson.JsonDeserializer;
+import com.massivecraft.massivecore.xlib.gson.JsonElement;
+import com.massivecraft.massivecore.xlib.gson.JsonNull;
+import com.massivecraft.massivecore.xlib.gson.JsonParseException;
+import com.massivecraft.massivecore.xlib.gson.JsonSerializationContext;
+import com.massivecraft.massivecore.xlib.gson.JsonSerializer;
+
+/**
+ * This is the abstract adapter for all "Massive structures".
+ * It makes sure Def instances "handle empty as null".
+ * It makes sure we avoid infinite GSON recurse loops by recursing with supertype.
+ */
+public abstract class MassiveXAdapter<T> implements JsonDeserializer<T>, JsonSerializer<T>
+{
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@Override
+	public JsonElement serialize(T src, Type type, JsonSerializationContext context)
+	{
+		// Calculate def
+		Class<?> clazz = getClazz(type);
+		boolean def = Def.class.isAssignableFrom(clazz);
+		
+		// If this is a Def ...
+		if (def)
+		{
+			// ... and the instance is null or contains no elements ...
+			if (isEmpty(src))
+			{
+				// ... then serialize as a JsonNull!
+				return JsonNull.INSTANCE;
+			}
+			// ... and it's non null and contains something ...
+			else
+			{
+				// ... then serialize it as if it were the regular Java collection!
+				// SUPER TYPE x2 EXAMPLE: MassiveListDef --> MassiveList --> ArrayList
+				return context.serialize(src, getSuperType(getSuperType(type)));
+			}
+		}
+		// If this a regular Massive structure and not a Def ...
+		else
+		{
+			// ... then serialize it as if it were the regular java collection!
+			// SUPER TYPE x1 EXAMPLE: MassiveList --> ArrayList
+			return context.serialize(src, getSuperType(type));
+		}
+	}
+	
+	@Override
+	public T deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException
+	{
+		// Calculate def
+		Class<?> clazz = getClazz(type);
+		boolean def = Def.class.isAssignableFrom(clazz);
+		
+		// If this is a Def ...
+		if (def)
+		{
+			// ... then deserialize it as if it were the regular Java collection!
+			// SUPER TYPE x2 EXAMPLE: MassiveListDef --> MassiveList --> ArrayList
+			Object parent = context.deserialize(json, getSuperType(getSuperType(type)));
+			return create(parent, def, json, type, context);
+		}
+		// If this a regular Massive structure and not a Def ...
+		else
+		{
+			// ... and the json is null or a JsonNull ...
+			if (json == null || json instanceof JsonNull)
+			{
+				// ... then deserialize as a null!
+				return null;
+			}
+			// ... and it's non null and contains something ...
+			else
+			{
+				// ... then deserialize it as if it were the regular java collection!
+				// SUPER TYPE x1 EXAMPLE: MassiveList --> ArrayList
+				Object parent = context.deserialize(json, getSuperType(type));
+				return create(parent, def, json, type, context);
+			}
+		}
+	}
+	
+	// -------------------------------------------- //
+	// ABSTRACT
+	// -------------------------------------------- //
+	
+	public abstract T create(Object parent, boolean def, JsonElement json, Type typeOfT, JsonDeserializationContext context);
+	
+	// -------------------------------------------- //
+	// UTIL
+	// -------------------------------------------- //
+	
+	public static Class<?> getClazz(Type type)
+	{
+		ParameterizedType parameterizedType = (ParameterizedType) type;
+		Class<?> clazz = (Class<?>)parameterizedType.getRawType();
+		return clazz;
+	}
+	
+	public static Type getSuperType(Type type)
+	{
+		Class<?> clazz = getClazz(type);
+		Type superclazz = clazz.getGenericSuperclass();
+		return superclazz;
+	}
+	
+	public static Object getNewArgumentInstance(Type type, int index)
+	{
+		ParameterizedType parameterizedType = (ParameterizedType) type;
+		Type[] actualTypeArguments = parameterizedType.getActualTypeArguments();
+		Class<?> clazz = (Class<?>) actualTypeArguments[index];
+		try
+		{
+			return clazz.newInstance();
+		}
+		catch (Exception e)
+		{
+			throw new RuntimeException(e);
+		}
+	}
+	
+	@SuppressWarnings("rawtypes")
+	public static boolean isEmpty(Object object)
+	{
+		// A Map is not a Collection.
+		// Thus we have to use isEmpty() declared in different interfaces. 
+		if (object == null) return true;
+		if (object instanceof Map) return ((Map)object).isEmpty();
+		if (object instanceof Collection) return ((Collection)object).isEmpty();
+		return false;
+	}
+	
+}
diff --git a/src/main/java/com/massivecraft/massivecore/cmd/MassiveCommand.java b/src/main/java/com/massivecraft/massivecore/cmd/MassiveCommand.java
index 1fa7c8cc..5d2f4699 100644
--- a/src/main/java/com/massivecraft/massivecore/cmd/MassiveCommand.java
+++ b/src/main/java/com/massivecraft/massivecore/cmd/MassiveCommand.java
@@ -49,10 +49,29 @@ public class MassiveCommand
 	public void setSubCommands(List<MassiveCommand> subCommands) { this.subCommands = subCommands; }
 	
 	public void addSubCommand(MassiveCommand subCommand)
+	{
+		this.addSubCommand(subCommand, this.subCommands.size());
+	}
+	
+	public void addSubCommand(MassiveCommand subCommand, MassiveCommand after)
+	{
+		int index = this.subCommands.indexOf(after);
+		if (index == -1)
+		{
+			index = this.subCommands.size();
+		}
+		else
+		{
+			index++;
+		}
+		this.addSubCommand(subCommand, index);
+	}
+	
+	public void addSubCommand(MassiveCommand subCommand, int index)
 	{
 		subCommand.commandChain.addAll(this.commandChain);
 		subCommand.commandChain.add(this);
-		this.subCommands.add(subCommand);
+		this.subCommands.add(index, subCommand);
 	}
 	
 	// FIELD: aliases
diff --git a/src/main/java/com/massivecraft/massivecore/collections/Def.java b/src/main/java/com/massivecraft/massivecore/collections/Def.java
new file mode 100644
index 00000000..64611fbc
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/Def.java
@@ -0,0 +1,6 @@
+package com.massivecraft.massivecore.collections;
+
+public interface Def
+{
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveList.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveList.java
new file mode 100644
index 00000000..0028a272
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveList.java
@@ -0,0 +1,50 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * This subclass adds better constructors. 
+ */
+public class MassiveList<E> extends ArrayList<E>
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: BASE
+	// -------------------------------------------- //
+	
+	public MassiveList(int initialCapacity)
+	{
+		super(initialCapacity);
+	}
+
+	public MassiveList()
+	{
+		super();
+	}
+	
+	@SuppressWarnings("unchecked")
+	public MassiveList(Collection<? extends E> c)
+	{
+		// Support Null
+		super(c == null ? Collections.EMPTY_LIST : c);
+	}
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: EXTRA
+	// -------------------------------------------- //
+	
+	@SafeVarargs
+	public MassiveList(E... elements)
+	{
+		this(Arrays.asList(elements));
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveListDef.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveListDef.java
new file mode 100644
index 00000000..4b69c9ad
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveListDef.java
@@ -0,0 +1,42 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Collection;
+
+/**
+ * This subclass does nothing new except implementing the Def interface.
+ * Def is short for "Default" and means GSON should handle "null" as "empty".
+ */
+public class MassiveListDef<E> extends MassiveList<E> implements Def
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: SUPER
+	// -------------------------------------------- //
+	
+	public MassiveListDef(int initialCapacity)
+	{
+		super(initialCapacity);
+	}
+
+	public MassiveListDef()
+	{
+		super();
+	}
+	
+	public MassiveListDef(Collection<? extends E> c)
+	{
+		super(c);
+	}
+	
+	@SafeVarargs
+	public MassiveListDef(E... elements)
+	{
+		super(elements);
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveMap.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveMap.java
new file mode 100644
index 00000000..957e3e83
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveMap.java
@@ -0,0 +1,82 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * This subclass adds better constructors. 
+ */
+public class MassiveMap<K, V> extends LinkedHashMap<K, V>
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: BASE
+	// -------------------------------------------- //
+	
+	public MassiveMap(int initialCapacity, float loadFactor)
+	{
+	    super(initialCapacity, loadFactor);
+	}
+
+	public MassiveMap(int initialCapacity)
+	{
+	    super(initialCapacity);
+	}
+
+	public MassiveMap()
+	{
+	    super();
+	}
+
+	@SuppressWarnings("unchecked")
+	public MassiveMap(Map<? extends K, ? extends V> m)
+	{
+		// Support Null
+		super(m == null ? Collections.EMPTY_MAP : m);
+	}
+
+	public MassiveMap(int initialCapacity, float loadFactor, boolean accessOrder)
+	{
+	    super(initialCapacity, loadFactor, accessOrder);
+	}
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: EXTRA
+	// -------------------------------------------- //
+	
+	public MassiveMap(K key1, V value1, Object... objects)
+	{
+		this(varargCreate(key1, value1, objects));
+	}
+	
+	// -------------------------------------------- //
+	// UTIL
+	// -------------------------------------------- //
+	
+	@SuppressWarnings("unchecked")
+	public static <K, V> MassiveMap<K, V> varargCreate(K key1, V value1, Object... objects)
+	{
+		MassiveMap<K, V> ret = new MassiveMap<K, V>();
+		
+		ret.put(key1, value1);
+		
+		Iterator<Object> iter = Arrays.asList(objects).iterator();
+		while (iter.hasNext())
+		{
+			K key = (K) iter.next();
+			V value = (V) iter.next();
+			ret.put(key, value);
+		}
+		
+		return ret;
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveMapDef.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveMapDef.java
new file mode 100644
index 00000000..29f50286
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveMapDef.java
@@ -0,0 +1,51 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Map;
+
+/**
+ * This subclass does nothing new except implementing the Def interface.
+ * Def is short for "Default" and means GSON should handle "null" as "empty".
+ */
+public class MassiveMapDef<K, V> extends MassiveMap<K, V> implements Def
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: SUPER
+	// -------------------------------------------- //
+	
+	public MassiveMapDef(int initialCapacity, float loadFactor)
+	{
+	    super(initialCapacity, loadFactor);
+	}
+
+	public MassiveMapDef(int initialCapacity)
+	{
+	    super(initialCapacity);
+	}
+
+	public MassiveMapDef()
+	{
+	    super();
+	}
+
+	public MassiveMapDef(Map<? extends K, ? extends V> m)
+	{
+		super(m);
+	}
+
+	public MassiveMapDef(int initialCapacity, float loadFactor, boolean accessOrder)
+	{
+	    super(initialCapacity, loadFactor, accessOrder);
+	}
+	
+	public MassiveMapDef(K key1, V value1, Object... objects)
+	{
+		super(key1, value1, objects);
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveSet.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveSet.java
new file mode 100644
index 00000000..5fa3341e
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveSet.java
@@ -0,0 +1,55 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedHashSet;
+
+/**
+ * This subclass adds better constructors. 
+ */
+public class MassiveSet<E> extends LinkedHashSet<E>
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: BASE
+	// -------------------------------------------- //
+	
+	public MassiveSet(int initialCapacity, float loadFactor)
+	{
+		super(initialCapacity, loadFactor);
+	}
+
+	public MassiveSet(int initialCapacity)
+	{
+		super(initialCapacity);
+	}
+
+	public MassiveSet()
+	{
+		super();
+	}
+
+	@SuppressWarnings("unchecked")
+	public MassiveSet(Collection<? extends E> c)
+	{
+		// Support Null
+		super(c == null ? Collections.EMPTY_LIST : c);
+	}
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: EXTRA
+	// -------------------------------------------- //
+	
+	@SafeVarargs
+	public MassiveSet(E... elements)
+	{
+		this(Arrays.asList(elements));
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveSetDef.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveSetDef.java
new file mode 100644
index 00000000..c7fa0ea4
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveSetDef.java
@@ -0,0 +1,47 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Collection;
+
+/**
+ * This subclass does nothing new except implementing the Def interface.
+ * Def is short for "Default" and means GSON should handle "null" as "empty".
+ */
+public class MassiveSetDef<E> extends MassiveSet<E> implements Def
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: SUPER
+	// -------------------------------------------- //
+	
+	public MassiveSetDef(int initialCapacity, float loadFactor)
+	{
+		super(initialCapacity, loadFactor);
+	}
+
+	public MassiveSetDef(int initialCapacity)
+	{
+		super(initialCapacity);
+	}
+
+	public MassiveSetDef()
+	{
+		super();
+	}
+
+	public MassiveSetDef(Collection<? extends E> c)
+	{
+		super(c);
+	}
+	
+	@SafeVarargs
+	public MassiveSetDef(E... elements)
+	{
+		super(elements);
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeMap.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeMap.java
new file mode 100644
index 00000000..22f0faab
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeMap.java
@@ -0,0 +1,45 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Comparator;
+import java.util.Map;
+import java.util.TreeMap;
+
+/**
+ * This subclass adds better constructors.
+ * It also includes the comparator as a Generic for automatic use with GSON. 
+ */
+public class MassiveTreeMap<K, V, C extends Comparator<? super K>> extends TreeMap<K, V>
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: BASE
+	// -------------------------------------------- //
+	
+	@SuppressWarnings("unchecked")
+	public MassiveTreeMap(Object comparator)
+	{
+		super((comparator instanceof Comparator) ? (C)comparator : null);
+	}
+	
+	public MassiveTreeMap(Object comparator, Map<? extends K, ? extends V> map)
+	{
+		// Support Null & this(comparator)
+		this(comparator);
+		if (map != null) putAll(map);
+	}
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: EXTRA
+	// -------------------------------------------- //
+	
+	public MassiveTreeMap(Object comparator, K key1, V value1, Object... objects)
+	{
+		this(comparator, MassiveMap.varargCreate(key1, value1, objects));
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeMapDef.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeMapDef.java
new file mode 100644
index 00000000..006f8a92
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeMapDef.java
@@ -0,0 +1,37 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Comparator;
+import java.util.Map;
+
+/**
+ * This subclass does nothing new except implementing the Def interface.
+ * Def is short for "Default" and means GSON should handle "null" as "empty".
+ */
+public class MassiveTreeMapDef<K, V, C extends Comparator<? super K>> extends MassiveTreeMap<K, V, C> implements Def
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: SUPER
+	// -------------------------------------------- //
+	
+	public MassiveTreeMapDef(Object comparator)
+	{
+		super(comparator);
+	}
+	
+	public MassiveTreeMapDef(Object comparator, Map<? extends K, ? extends V> map)
+	{
+		super(comparator, map);
+	}
+
+	public MassiveTreeMapDef(Object comparator, K key1, V value1, Object... objects)
+	{
+		super(comparator, key1, value1, objects);
+	}
+	
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeSet.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeSet.java
new file mode 100644
index 00000000..a4e676c5
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeSet.java
@@ -0,0 +1,47 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.TreeSet;
+
+/**
+ * This subclass adds better constructors.
+ * It also includes the comparator as a Generic for automatic use with GSON. 
+ */
+public class MassiveTreeSet<E, C extends Comparator<? super E>> extends TreeSet<E>
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: BASE
+	// -------------------------------------------- //
+	
+	@SuppressWarnings("unchecked")
+	public MassiveTreeSet(Object comparator)
+	{
+		super((comparator instanceof Comparator) ? (C)comparator : null);
+	}
+	
+	public MassiveTreeSet(Object comparator, Collection<? extends E> c)
+	{
+		// Support Null & this(comparator)
+		this(comparator);
+		if (c != null) addAll(c);
+	}
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: EXTRA
+	// -------------------------------------------- //
+	
+	@SafeVarargs
+	public MassiveTreeSet(Object comparator, E... elements)
+	{
+		this(comparator, Arrays.asList(elements));
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeSetDef.java b/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeSetDef.java
new file mode 100644
index 00000000..b0fbe2c7
--- /dev/null
+++ b/src/main/java/com/massivecraft/massivecore/collections/MassiveTreeSetDef.java
@@ -0,0 +1,38 @@
+package com.massivecraft.massivecore.collections;
+
+import java.util.Collection;
+import java.util.Comparator;
+
+/**
+ * This subclass does nothing new except implementing the Def interface.
+ * Def is short for "Default" and means GSON should handle "null" as "empty".
+ */
+public class MassiveTreeSetDef<E, C extends Comparator<? super E>> extends MassiveTreeSet<E, C> implements Def
+{
+	// -------------------------------------------- //
+	// CONSTANTS
+	// -------------------------------------------- //
+	
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// CONSTRUCT: SUPER
+	// -------------------------------------------- //
+	
+	public MassiveTreeSetDef(Object comparator)
+	{
+		super(comparator);
+	}
+	
+	public MassiveTreeSetDef(Object comparator, Collection<? extends E> c)
+	{
+		super(comparator, c);
+	}
+	
+	@SafeVarargs
+	public MassiveTreeSetDef(Object comparator, E... elements)
+	{
+		super(comparator, elements);
+	}
+
+}
diff --git a/src/main/java/com/massivecraft/massivecore/money/Money.java b/src/main/java/com/massivecraft/massivecore/money/Money.java
index 24d95b7d..9a530c3e 100644
--- a/src/main/java/com/massivecraft/massivecore/money/Money.java
+++ b/src/main/java/com/massivecraft/massivecore/money/Money.java
@@ -55,6 +55,12 @@ public class Money
 		return mixin.format(amount);
 	}
 	
+	public static String format(double amount, boolean includeUnit)
+	{
+		if (disabled()) return String.valueOf(amount) + (includeUnit ? "$": "");
+		return mixin.format(amount, includeUnit);
+	}
+	
 	public static String singular()
 	{
 		if (disabled()) return "singular";
@@ -67,6 +73,12 @@ public class Money
 		return mixin.plural();
 	}
 	
+	public static int fractionalDigits()
+	{
+		if (disabled()) return 0;
+		return mixin.fractionalDigits();
+	}
+	
 	// -------------------------------------------- //
 	// EXISTANCE
 	// -------------------------------------------- //
diff --git a/src/main/java/com/massivecraft/massivecore/money/MoneyMixin.java b/src/main/java/com/massivecraft/massivecore/money/MoneyMixin.java
index ec7ad7f8..34e53869 100644
--- a/src/main/java/com/massivecraft/massivecore/money/MoneyMixin.java
+++ b/src/main/java/com/massivecraft/massivecore/money/MoneyMixin.java
@@ -15,8 +15,10 @@ public interface MoneyMixin
 	// -------------------------------------------- //
 	
 	public String format(double amount);
+	public String format(double amount, boolean includeUnit);
 	public String singular();
 	public String plural();
+	public int fractionalDigits();
 	
 	// -------------------------------------------- //
 	// EXISTANCE
diff --git a/src/main/java/com/massivecraft/massivecore/money/MoneyMixinAbstract.java b/src/main/java/com/massivecraft/massivecore/money/MoneyMixinAbstract.java
index 28e8ef16..c93770af 100644
--- a/src/main/java/com/massivecraft/massivecore/money/MoneyMixinAbstract.java
+++ b/src/main/java/com/massivecraft/massivecore/money/MoneyMixinAbstract.java
@@ -6,6 +6,15 @@ import java.util.Collection;
 
 public abstract class MoneyMixinAbstract implements MoneyMixin
 {
+	// -------------------------------------------- //
+	// FORMAT AND NAME
+	// -------------------------------------------- //
+	
+	public String format(double amount)
+	{
+		return this.format(amount, true);
+	}
+	
 	// -------------------------------------------- //
 	// MOVE
 	// -------------------------------------------- //
diff --git a/src/main/java/com/massivecraft/massivecore/money/MoneyMixinVault.java b/src/main/java/com/massivecraft/massivecore/money/MoneyMixinVault.java
index bb7a9cea..0eb6a762 100644
--- a/src/main/java/com/massivecraft/massivecore/money/MoneyMixinVault.java
+++ b/src/main/java/com/massivecraft/massivecore/money/MoneyMixinVault.java
@@ -13,6 +13,7 @@ import com.massivecraft.massivecore.util.MUtil;
 
 
 
+
 import net.milkbowl.vault.economy.Economy;
 
 public class MoneyMixinVault extends MoneyMixinAbstract
@@ -63,9 +64,28 @@ public class MoneyMixinVault extends MoneyMixinAbstract
 	// -------------------------------------------- //
 	
 	@Override
-	public String format(double amount)
+	public String format(double amount, boolean includeUnit)
 	{
-		return this.economy.format(amount);
+		if (includeUnit)
+		{
+			return this.economy.format(amount);
+		}
+		else
+		{
+			int fractionalDigits = this.fractionalDigits();
+			if (fractionalDigits < 0)
+			{
+				return String.valueOf(amount);
+			}
+			else if (fractionalDigits == 0)
+			{
+				return String.valueOf((int)Math.round(amount));
+			}
+			else
+			{
+				return String.format("%." + fractionalDigits + "f", amount);
+			}
+		}
 	}
 	
 	@Override
@@ -80,6 +100,12 @@ public class MoneyMixinVault extends MoneyMixinAbstract
 		return this.economy.currencyNamePlural();
 	}
 	
+	@Override
+	public int fractionalDigits()
+	{
+		return this.economy.fractionalDigits();
+	}
+	
 	// -------------------------------------------- //
 	// EXISTS AND CREATE
 	// -------------------------------------------- //
diff --git a/src/main/java/com/massivecraft/massivecore/util/MUtil.java b/src/main/java/com/massivecraft/massivecore/util/MUtil.java
index 48db16ae..c1591330 100644
--- a/src/main/java/com/massivecraft/massivecore/util/MUtil.java
+++ b/src/main/java/com/massivecraft/massivecore/util/MUtil.java
@@ -13,7 +13,6 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
-import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
@@ -49,9 +48,13 @@ import org.bukkit.potion.PotionEffect;
 import org.bukkit.potion.PotionEffectType;
 import org.bukkit.projectiles.ProjectileSource;
 
+import com.massivecraft.massivecore.CaseInsensitiveComparator;
 import com.massivecraft.massivecore.MassiveCore;
 import com.massivecraft.massivecore.MassiveCoreEngineMain;
 import com.massivecraft.massivecore.MassiveCoreEngineWorldNameSet;
+import com.massivecraft.massivecore.collections.MassiveList;
+import com.massivecraft.massivecore.collections.MassiveSet;
+import com.massivecraft.massivecore.collections.MassiveTreeSet;
 import com.massivecraft.massivecore.util.extractor.Extractor;
 import com.massivecraft.massivecore.util.extractor.ExtractorPlayer;
 import com.massivecraft.massivecore.util.extractor.ExtractorPlayerName;
@@ -589,34 +592,21 @@ public class MUtil
 	// SIMPLE CONSTRUCTORS
 	// -------------------------------------------- //
 	
-	
 	@SafeVarargs
 	public static <T> List<T> list(T... items)
 	{
-		return new ArrayList<T>(Arrays.asList(items));
+		return new MassiveList<T>(Arrays.asList(items));
 	}
 	
 	@SafeVarargs
 	public static <T> Set<T> set(T... items)
 	{
-		return new LinkedHashSet<T>(Arrays.asList(items));
+		return new MassiveSet<T>(Arrays.asList(items));
 	}
 	
-	@SuppressWarnings("unchecked")
-	@SafeVarargs
-	public static <T> Set<T> treeset(T... items)
+	public static Set<String> treeset(String... items)
 	{
-		Set<T> ret;
-		if (items[0] instanceof String)
-		{
-			ret = (Set<T>) new TreeSet<String>(String.CASE_INSENSITIVE_ORDER);
-		}
-		else
-		{
-			ret = new TreeSet<T>();
-		}
-		ret.addAll(Arrays.asList(items));
-		return ret;
+		return new MassiveTreeSet<String, CaseInsensitiveComparator>(CaseInsensitiveComparator.get(), Arrays.asList(items));
 	}
 	
 	@SuppressWarnings("unchecked")
@@ -750,12 +740,29 @@ public class MUtil
 	
 	public static <T> int compare(Comparable<T> herp, T derp)
 	{
-		if (herp == null && derp == null) return 0;
-		if (herp == null) return -1;
-		if (derp == null) return +1;
+		Integer ret = compareNulls(herp, derp);
+		if (ret != null) return ret;
 		return herp.compareTo(derp);
 	}
 	
+	public static Integer compareNulls(Object one, Object two)
+	{
+		if (one == null && two == null) return 0;
+		if (one == null) return -1;
+		if (two == null) return +1;
+		return null;
+	}
+	
+	public static Integer compareWithList(Object one, Object two, List<? extends Object> list)
+	{
+		int oneIndex = list.indexOf(one);
+		int twoIndex = list.indexOf(two);
+		if (oneIndex != -1 && twoIndex != -1) return oneIndex - twoIndex;
+		if (oneIndex != -1) return -1;
+		if (twoIndex != -1) return +1;
+		return null;
+	}
+	
 	// -------------------------------------------- //
 	// SORTING
 	// -------------------------------------------- //