Come on, shut about polygon counts, he knows very well for himself what is possible and what not, in contrast to most of the others here which still think that 5k polies for a character is too much...
Yes, one could put some more structures into the models suface, but I am not sure if that would be what he wants this model to look like. Less polygons would make it look a lot less round, while that smooth look it now has is actually a big part of the models style.
I like it and especially the look of its face, while the models lower parts are a bit boring in comparison. I prefer the first hand over the simple one, which really would not fit to the rest.