The last that was seen of Sara, she was absorbed by the Phallanx collective, and could be the villains of the story. I would like them to find Gailyn and Joey alive on Krakoa, Sara's children. They had their mutations artificially activated, so should have been in the creche to be resurrected.

I have been thinking it is another lie of Sinister's. when Tony Stark made the comment that one of the X-Men wasn't a true mutant. I would like to see that be Havok who is the clone, and Gambit is actually the true Alex. It would explain a lot about Havok's instability. Sinister may even have used the Living Pharaoh in the mix, which is why their powers drain each other, or overpower when the other is contained.

I have said for years that I believe Havok is the cloned sibling, and that Gambit is the true Alex. Sinister likes to add some truth to his lies. It makes him feel superior.

It would be a nice Easter egg if they have the twins suit up as Superman , but as red and blue. Clark has been both in silver age, and during the "electric " era. Also since the comics only have Jon, and he takes on the Superman mantle, doing this with the twins would make a kind of sense.