I kinda wish it wasn't teased so much as a HUGE TWEEEST.
It makes it that much more obvious.
Star Trek is a lot of things, but a complex plot isn't one of them.
Unless Kirk turns out to be a jedi.
That'd be a pretty huge twist.
Or even a post credits scene where they come across a derelict Millenium Falcon.
That'd be twist worthy.
Having one of the maybe 2 big TOS villains show up in a reboot is rather easy to see coming. Especially when it's hinted so damn hard.