I'm honestly surprised by the lack of FF collabs. Then again, not getting collabs left and right is probably a good sign that the creative team isn't scraping the bottom of the barrel yet and is more busy coming up with new stories instead of shoehorning in collabs.

Though if they ever get to that point, then my dream scenario would be a Dissidia collab. Have some multiverse event, where our main character is actually being called as a warrior and representative of XIV.