I could imagine that a few X-Men are leaving the team and joining Magneto. Rogue for sure, maybe Beast, and even Cyclops (for shock-value). Colossus...
Defs hope Synch is in this book or another flasgship. Continue that momentum. And keep him away from NYX - he shouldn't have to deal with young adult...
Magneto was probably worried about them, too. But you don't need to warn Storm about the dangers she's already aware of. He wanted Storm to keep her...