Something like a "/create" command for map creators and server developers

The command can make an item, block or entity with some adjustable settings so map creators and server developers don't have to override already existing textures if they want their custom item/block/entity to have a texture they made and it can make some things a lot easier.

Example: CubeCraft's "Lucky Islands" minigame has these blocks called "Lucky Blocks" and they take the textures of a note block and the problem is they cannot use the note block (on the same note) anywhere else on the server.

Example of the command: /create item/block/entity (insert some kind of attributes or something else dependant on the choice you have made) tag (how the game interprets the item/block/entity) name (how the name of the item/block/entity is displayed)

Thanks to all you guys at the Mojang team for making such a great game! :D