I really like this game alot! Good job! One thing that reallllllyy irks me is Chris' boobs with the green shirt. T shirts do not fit like that on a normal human unless in this world women's shirts are cut with two large "pockets" for their breasts. My only real criticism!
I think this would be difficult to do, and a LOT of extra drawing. I dunno who does the art but pretty sure one would have to draw the avatar with each level of change per character.