Sure. I eagerly await Cap America making thought-provoking serious speeches while wearing bright spandex
I personally don't expect either the Avengers or a possible JL movie to provide anything else than great entertainment. The Justice League cartoon series was just that and it kicked ass. I don't want anything like Superman Returns or hell, even Spider-Man anymore.
The point I was making is that Avengers, JL or any other hero ensemble movie face the same problems.
That being said, I'm sure most of us can agree that when it comes to animated movies about their characters, DC has, so far, pretty much beaten Marvel.