Suggestions for 1.13

Hello minecraft developers. While you are working on all the cool new commands, I have a few more suggestions for them:

- /execute (if/unless) structure <begin xyz> <end xyz> <directory> (all/masked) <command...>
<command> will execute if (or unless) the specified region matches the specified structure in <directory>

- /execute (if/unless) biome <xyz> <biomeID> <command...>
<command> will execute if (or unless) the specified coordinates are inside a <biomeID>

- rename the /modifiyitem command to "/itemdata" (just for consistancy)

- add in /modifyitem or /itemdata a way to add, set or remove lore lines. This is currently impossible with the NBT system.
For example: /itemdata entity @a item diamond_sword -1 lore add This is a sword!

- make enchantments data-driven, so we will be able to add new enchantments to custom maps easily with JSON or something. The mechanics of the enchantment won't be implemented inside the JSON file, so we will just do that with commands.

Thanks a lot for reading, I will be really happy if you may consider some of these into the game. Can't wait for the new 1.13 stuff! So far they are absolutely awesome :)