The new movies established the speed of federation starships to be much greater than in the prime universe.
As such, for the next movie the scenarists could credibly use ANY power/race encountered in the 24th century and even ones not encountered.
I suspect as well that the next movie will have klingons as enemies (this time, depicted as being able to act beyond primitive savagery + piercings on their foreheads).
If this will not be the case, an unknown antagonist would be preferable. We had more than enough small universe syndrome in STiD.