It is a reimagining in many ways. The film acknowledges its alternate status, but regardless, it would have been nice to see (if not in Kirk, which would have been easiest and perhaps, hehe, most logical choice then in someone else) a queer gaze of some kind.
Sulu would be great, I dunno if in these new movies there will be room for more ensemble interaction rather that dynamic duo action.

What's diversity for the sake off, exactly? There are different kinds of people, in sci-fi many are erased, be it women, poc and/or queer (and others). I don't think it's too horrible to ask for a current film of an old franchise to update itself in that manner.

In any event, I'm looking forward to more of these characters, hopefully none of the actors decide to bale in the near future :)