i thought the characters were all 3d scanned, not hand crafted really. anyways, the amount of clothing variations and the environments look impressive.
I'm surprised to hear that. Crackdown 2 was at number one in the charts for a while wasn't it? They'd have made a fair amount out of that wouldn't they?
You should probably increase the amount of leaves relative to the bare branch, assuming you are going for the coconut style frond shown in the concept.
you can also turn up the diffuse boost on the floor material and this will increase the amount of reflected rays from the lights hitting that material.