The x-men have actualy interesting scifi and fantasy concepts, villains, exciting characters and storylines that sorta counter your opinion.
If they made the red headed step child of marvel, the avengers, who in 40 years combined have like 2 good stories, a handfull of iconic villains and were left to the background as failures until millar's Ultimates and bendis run completly shook the foundation, creating their own versions of the team thats similar in name only, in millar's case changing their personalities and team goal to near parody levels or in bendis's case, getting rid of most of the classic cast and replacing it with spider man, wolverine and the heroes for hire and any and all possible popular character that they can trow into it for a quick cover cameo, then they started to be sucessfull.
Funny how avengers had to be torn to shreds then replaced to be sucessfull.
Imagine what they will do with decades of execptional stories that the x-men have, or even basic concepts.
The x-men have been popular since the 80's, they never needed a complete makeover that ignores most of their classic history and characters or an ultimate universe version to make them relevant.
There's a reason krakoa has 12 books and the avengers have two (if you count savage) , without an inorganic editorial mandate that went ahead to nearly rewrite marvel's history to enforce the ilusion that the avengers are suddenly the center of the universe, they return to what they are, a shallow team with no identity.
while the x-men universe has praticaly endless possibilities, endless reach and a pratically endless cast of characters to use that all spark imagination and interest.