The Avengers is set for a 2012 release. As geeked as I am about this movie, ensemble pieces are often quite difficult to write (who get more screen time than who, and so on). Now multiply that because it's a COMIC BOOK FRANCHISE. Plus, you need time for your villain, action sequences, wanton destruction, etc., and as you can see, it all gets rather complicated.
Oh, and they kicked Edward Norton to the curb. He was going to play Bruce Banner/The Hulk. Norton is only one of our best young American actors.
I'm pessimstic yet hopeful. If that's possible. Hopefully the director, Joss Whedon, do the team proud. Or else he'll have Mickey Mouse (Disney is the parent company) breathing down his neck.