I would like to see someone attenpt making a mod/addon that makes stuff go smooth. As in like for say doors, instead of closing instantly they show and animation of them closing. Also trap doors that same. (Basically like chest they have an opening animation). I actually dont know if its actually possible but in PC ive seen it quite a bit and I like it.
List of blocks with animations:
Levers (When switched)
Pistons (When added)
I believe thats about it. Basically any block that does a movement like a door or lever.