Now see? That Machoke/Machamp face is wonderful, why can't you do that with people?
But in all reality..the Scizor, Weedle, Pidgey, Machamp, Machoke, Sycther, Shellder, and Bulbasaur all look good enough to use in Cards for sure.
Beedrill and Ivysaur, and Machop, are kind of teeter on the edge there..
I'm not a big fan of Charizard, however. It seems like its so far out there that, if I wasn't told what it was, I wouldn't get the image right away..which makes me think its too "out there"...too much mythological dragon, not enough pokemon.