I think they had to keep it so you can distinguish between Havok, Angel, and Pyro (three blondes). I don't know that Bob Quinn can draw them all with different looks. I think he should focus on the hair and builds to create distinction.
Pyro = Slim with a longer nose and curly hair and face tattoo.
Havok = Medium build with straight short cut hair
Angel = Muscular with sort of a mullet style, or a bit longer hair.