8. It Would Fix Plot Holes
As with all long running series, science fiction or otherwise, there are details in parts of Star Trek that just don't add up. Details such as why was it no problem to mention the Eugenics wars in Doctor Bashir, I Presume, but the subject was swept under the carpet in The Voyage Home, and specifically Voyager's two parter Future's End, when it really needed to be addressed. When looking at Khan specifically, Space Seed gives his back story as coming from a Sikh background in India, and that his control extended over parts of Asia and the Middle East. When looking at Benedict Cumberbatch however, you pretty much see England personified. Granted Ricardo Montalban was Mexican (in the 60's even Star Trek could only go so far in terms of white/everyone else), but it's no surprise that Cumberbatch only called himself Khan when confronted by Kirk; while fans never considered Harrison would be his real name, it's far more believable than Singh. Khan's Indian/English heritage is something that could more adequately be explained by further exploring Khan's background however, as well as being an important theme in a TV series built upon the notion of people conquering other nations due to a belief in their supposed superiority. Which leads us nicely to my next point..