What if there are two Preds in the movie?
The one weve seen so far in the trailer, who is the main antagonist (possibly a new super or bad blood, if the different look is any indication) and Greyback, who will be kept secret and wont be shown in any trailers.
Movie ending with Greyback + main character killing the bad blood, and Greyback somehow acquiring the flintlock.
I doubt it will happen like this, but it would be interesting.
I also dont believe the Pred is female: we know how females look at this point, and its nothing like this. Ofc they couldve just created a new look for a female for the movie, but that would be pretty strange.