She should be showing up sometime. Tom mentioned he was drawing Jones a couple of weeks ago on Twitter, and since his buffer is around 3 weeks ahead iirc, it's just a matter of time.
That is what I'm thinking, but until Jones gives her stone cold analysis of what's going on with her charges' various abilities, it's going to remain a guess.
Thought so, but just had to be sure. Magneto's powers are open-ended enough that the writers probably have trouble coming up with ways for him to lose. So they just go for the easy way over and over again.