I think that Khan could be done in a Abramsverse movie and done well. However, I don't like the idea of using Khan in the first "real" film that's not the reboot story. Just from a perception standpoint. I think a lot of the audience will react to it like "wow, they're already redoing Khan, they must have no new ideas." I'd rather see them do a completely original story this time around, and then perhaps redo a familiar character with the third film.