Betsy wants to free her brother and Rictor wants more "talks" with Apocalypse so it makes sense. Gambit going at him alone is foolish tho. I rly dont understand why Rachel isn't here...
Tbh i would change a lot about this story. Have the story be about mutant magic instead of dancing around it. Ditch Gambit and have rachel and Meggan replace him. Maybe Crawler as well since he is not doing anything. Apocalypse can still be the shaddy guy in the background toying with everyone, but lets not make everyone else look dumb so Apocalypse looks better. Imo i wouldn't give Betsy Cap Brit mantle, but if it was an editorial mandate then I woukd have her be more useful than her current role in the book.
Apocalypse starting a war with otherworld for his own end and using mutants as pawns to acheieve his goals, all the while using and expanding this mutant magic stuff is a decent premise for the book. Excecution needs 2 be better tho.
EDIT**
A possible line up
Pixie
Apocalypse
Betsy
Rachel
Rictor
Rogue
Crawler
Meggan
In the 2nd arc of the book have Selene show up. Maybe foreshadow her in the 1st arc..