The X-Men just show up in full force meaning both Xavier and Magneto. Reed and Sue's apprehensive looks seem pretty much a given. Franklin's also a bit peeved until he and Kitty have their happy reunion. Now that I think is nice.
With Chuck and Mags both there, I'd love to see Franklin do a Chris Farley routine. "Hey, remember when you two guys became one and the non-mutant heros sacrifices themselves to stop you. Then I made an alternate world so they could survive? That was awesome."
I've said it before, I am convinced that not only will Franklin WANT to go with the X-Men, but that seems to be the most probably outcome. Why?
Franklin's a teenager. Teenagers think they know what's best for them and their parents are idiots.
The reincarnation gimmick on Krakoa seems to be a nice way for Franklin to regain his full powers and for Reed, Val, and Xavier to work together to solve the problem.
If Franklin wants to stay with the FF, there's no drama and this story gets delayed until the next mini-series.
Now whether Franklin goes to Krakoa supposedly to stay, I won't guess. The ending of Franklin choosing X and not being able to go will increase his teenage angst and we really need more of that, amirite?