Originally Posted by Mulholland '49
The Avengers screentime worked because each individual character got their own movie before it. Now imagine how it would have turned out if they didn't.
I believe that a lot of people who saw Avengers hadn't seen all of the individual movies; the film was just a big summer event.
The people I know who saw Avengers had not seen Iron Man, Thor, Hulk and Captain America. In fact, I know someone who hadn't seen any of those movies and still loved Avengers.
It worked because it (largely) fulfilled expectations of the the three key groups: diehard fans, critics and mainstream viewers. That's not to say it was perfect or provided deep meaningful ideas, but it worked.
I would not want X-Men to emulate Avengers. But there are some key things in Avengers that could also apply to X-Men - respecting the comics and classic characters (including the costumes), not having one character overshadow everyone else and providing a sense of scale and spectacle (backed up with excellent special effects).