Anyone who has played New Vegas knows that an open world game with great story, characters, and choices/consequences IS possible, and if anyone can pull it off, it's CDPR. I'm all for it, if that's what they want to do.

I'm picking both because I will definitely play the game thru more than one time. Probably more than 10 times.

...I want a hug and a cookie....and some coffee.....

I'm going to concede this point. It's been a while since I played W2, and having googled images of Geralt from that game, I can see what you mean. His arm size is fine, but they don't look particularly strong or well muscled. Granted i'd call that more of a slight oversight by the developers, and not really representative of his actual physique.

I'd be REALLY curious to see what Bonhart would look like rendered in the game, since he was described as tall, slender, very strong and very fast.

Muscle growth is not necessary for strength, only muscle density and tension. This is normally associated with growth, but if the muscles are denser and possess a higher tensile strength, then size is not necessary to determine strength. Compare a gymnast's body to that of a weight lifter. The weight lifter may be larger, and even more defined, but in general a gymnast will always be far stronger, due to the more efficient manner in which the muscles are trained. It can then be assumed that the mutagens enhance strength, while retaining a slimmer physique to facilitate speed and agility, which are Geralt's bread and butter. Additionally, Geralt's forearms are not really underdeveloped. They are more than half the thickness of his upper arms, and very corded.