Seriously guys, now you are all exaggerating.
"He is too pretty"
"He looks to healthy"
"He doesn't look pale enough"
"His cheeks are not right"
"He has too much muscle, he is too bulky"
"His hair is not white enough"
"His eyes are not as they were in previous games"
You might as well say you hate everything about his in-game model.
Here is what I think:
Yes, he should look a little paler, especially in the face but also in terms of body. CDPR needs to find a way to make his skin be less effected by the lighting, because that is the main problem IMO. Also, they can make him paler in terms of base color as well. I mean it's not like they have to worry about anything, as far as I know it was confirmed that there will NOT be any visual effects of potions (a real shame) so they could make him as pale as they want, and they should.
Yes, I agree that his beard hair should be a tad bit more white.
On the other hand, they already changed the cheeks of his so IMO it looks good now (if you still think the cheeks are not right imagine him without the beard, because that makes a lot. Seriously, if I look into the mirror with and without a beard and compare I look a lot thinner without a beard), also his scars are more than enough, and seriously his body was always that way, his shoulders were always that wide and his body that muscle-packed and "bulky". In TW2 (and in TW1 even though you couldn't see it there because he always wore clothes) he was the same way.
I mean he is a goddamn Witcher, they take steroids, train hard, then go through extreme mutations. There has to be some muscles, especially considering the reflexes Witchers have, hell their fast-acting muscles fibers need to be DOPE.
Aside from that Geralt is fine IMO.
Make him paler and maybe make his beard a little less black-ish and more white, and then he is fine.