they're going to get as much out of Ian McKellan as they can while they still can! both magneto and wolverine will be prequels. For McKellan, they're going to use the same cgi team who reduced his age for the opening scene in x3. As opposed to shooting the film years later...where they'd have to replace a dead actor with someone new who we'd all bitch about, they're going to do it now. contracts prevent them from going forth with another x movie right now, they've got to focus and capitalize on these. x-men is a series that will be continued, revamped, and re-envisioned all throughout the next century! why push their luck?? their slate of upcoming projects is pretty damn calculated...
they're not in it to "please the fanboys"...we're not the ones with the money. MAINSTREAM moviegoers bring in the cash...and they WANT to see wolverine and magneto spinoffs