>>6698388TLNM Making Of book which is filled with that stuff.
It's especially interesting how some of the details on the finished models are actually "dummied out" functions from the earlier planning stages.
Those discs on the Quake Mech's forearms were supposed to be wheels so it could go into some sort of vehicle mode by laying down and the Ice Tank didn't have its odd side cannon.
Instead the side "wings" would move outwards and a giant cannon, which ended up being that large transparent container on its back, would rotate forward, switching places with the diamond-shaped center, and making the whole thing look like an actual tank.
