Re: They are going ahead with a Justice League movie
There's the problem with that setup: no introduction to those 4 more heroes at all. And that's how this would fail, and why The Avengers was a success. Each of the heroes already had his/her intro in previous movies, and the audiences liked them.
The thing people seem to be missing is that team movies have been done before Avengers and will be done after Avengers without separate intro movies for the team members. It's just that most other team movies don't portray super powers.
Hell, the "gather the team" storyline is a tradition in some genres like westerns. I think DC can make it work.
Baby, you and me were never meant to be, just maybe think of me once in a while...