Remember how much of a problem continuity is?
In a recent post on his blog "Again with the Comics," Brian Hughes talks about how he fell off the X-Men bandwagon. His disillusionment came partially through the milking of the X-Men line, and partly through the inevitable, stupid weight of continuity.
Not coincidentally, that's also what finally put me off X-Men. Change your model, people! Series reboots are much healthier than each character having a backstory that literally takes an impossibly long time.