Naughty Dog Jonathan Cooper stated the most difficult challenge they had while rendering Uncharted was the character hair model though they described how they will overcome it in the future. He also revealed that the new technologies will help set a bar to even make them create realistic characters.
“A major reason so many last-gen characters sported crew cuts was we couldn’t do hair easily. I expect much more hairstyles this generation. Primarily because engines couldn’t support realistic lighting on alpha (see-through) textures, not to mention physics on long hair.”
“There are more technologies incoming that will release us from the homogenisation of game characters,”