Oh, that stuff
I recall almost every character had the same limbs and fury underwear, I used to rip the arms off and interchange them with each other making new characters. I guess that was kinda fun. The one thing I didn't like was that elastic binding the legs together, a couple of mine snapped
Most Innovative? I don't think so, that should go to Transformers or even Micronaughts!
Some things I really liked about MOTU was the artwork on the boxes, really beautiful stuff, that's probably what drew me into the figures the most!
