How much more effort should have been put into casting a Montalban look-alike? Cumberbatch has similar facial features, black hair, and white skin, and clean shaven. Are you suggesting he should have been given makeup to darken his skin as was done with Montalban in Space Seed, but, not in WoK? And why, if the complaint is about being Indian or Sikh, would they possibly want Khan to have a thick Latin Accent? Why is a light skinned Mexican Guy, born to Spanish parents, so much more believable as a Sikh or an Indian than a light skinned British Guy? The British have a long history with India, it is way, way more believable for a British guy to be an Indian then it is for a Mexican guy (especially with a thick Latin Accent). Mexico and Spain don't have anywhere near the relationship/history with India that Britain does.