- Armor - Armor is possible via add-ons, but is very limited.
- JSON 3D Models - These are used for entity models. Should have the animation pop-up for this like Java 3D Models on Minecraft Forge generators.
- GUI - These are possible using Scripting API, but requires a prompt to join world when using this. The prompt should be noted on the element.
- Scripting API - This is a big part of Add-Ons, and is a version exclusive. Maybe add the procedure element to the generator and make it have scripting features instead of normal procedures?