Hmm... So basically, all I will be doing is creating custom objects for my maps to make a custom terrain, sound boxes, and edge concealers, and custom materials and whatever other files I can access for the mirror and color slider ideas. As for the rigged items and new animations, I'm hoping the animations are avaiable in the .skeleton file, and I'm wondering if rigging the items to the skeleton will animate them so they move with your character in game.
If any of that made any sense... I am pretty tired, so I apologize if I'm just getting more confusing.