Why? If she's as succesful as everyone says why do you need to put her on a team that is already selling?
Well, you said it not me...x23 ROCKS. If TOG is retarded then so am I. Hmm. I know of you wouldn't disagree.
Because Marvel is more worried about their quarterly earnings than quality comic books? How would you do it, too? "Oh hey, I know she's a member of the New X-Men that Emma trusts about as far as she can throw and it'd be difficult for her to (logically) take off to adventure with you, but since the real Avengers have Wolverine, you need to earn some street cred by having his breast-owning Mini-Me on your team".Because she might add an interesting dynamic to the team? For that matter, why have so many heavy hitters on the real Avengers? Just drop Spider-Man and Wolverine in there and I'm sure you could sell a weekly Avengers book.