My Name Is Legion wrote:
Khan is by far the best-known antagonist in Star Trek to the general audience. That is reason enough to use him.
Actually, I would wager the best-known antagonists to the general audience are the Klingons, followed closely by maybe the Borg. TWOK was 31 years ago -- its lasting impact on casual Trek fans, and even the general audience at the time, has long since waned. Of course, one could also argue that makes it ripe for a reboot.