Except in 1982 Ricardo Montalban's Khan didn't look that much less white than Benedict Cumberbatch's Khan
So you're saying it's good we didn't progress any since 1982 regarding cultural diversity in our media and just held course with the white-washed casting?
Huh, thats funny I don't recall Khan's nationality being brought up at all in Wrath of Khan. In fact its isn't even brought up in Star Trek Into Darkness either. Hell it was a foot note at best in Space Seed and based solely on the observations of Lt. Backstabber, and as Christopher pointed out based on a hodgepodge of stuff put together.
And the whole moral outrage thing falls apart since lets be honest would anyone really be commenting about it if Benicio del Toro hadn't had to drop out, despite not being Khan's ethnicity either.