General Better Datapack Features

I simply wish to list some more realistic features Datapacks could really use.

1. - Custom Model Data for Blocks (Maybe Entities)

A way to define CMD for Blocks to define custom models, and therefore textures. While not really being new blocks, this would be a huge step forward.

2. - Creative Inventory Intergration 

Simply being able to add your CMD items/blocks to the creative menu would really help.

3. - NBT Detection for Recipes

Making a Datapack and hiding the fact you can actually just use iron ingots instead of your uber-awesome warden-ingots to craft an item is pretty weird for a game with "craft" in its name. Just add NBT Intergration, please!

4. - More Commands in General with Datapacking in Mind

Having more commands to help with your mcfunctions will always be nice :).