Maybe look into the new Star Wars Battlefront as reference? I haven't played it yet but since it has both humans and big robots playing around in the same field, there's probably something to take away from that. About colorful environments, there's plenty in the world :) http://mysticplaces.tumblr.com/…
Thanks for the comments! The body-morphology system turned out to be a bit more complicated to implement than what I originally thought. After each hit the root bone has to be scaled in order to keep the feet on the ground and prevent "floating", the collision capsule size has to be figured out for both standing and…