The same observation applies here. Khan has MAGIC BLOOD and we're nitpicking skin color?
In this ST universe where:
- thick red nailpolish can seemingly create blackholes
- anti-matter bombs can reverse the gravity of blackholes
- people can be beamed light years away to a starship moving faster than light
- time travel
-..we're gonna nitpick magic blood?
I would have accepted a Khan has magic blood story in the prime universe as well. He is genetically engineered after all.
Del Toro or Bardem, or actually an Indian like Shah Rukh Khan, those would have been good choices for KHAN.
Cumberbatch is great, and his John Harrison seemed to be a pretty cool new villain, but he's definitely no Khan.