User blog:Teff/How many heroes are too much?

I have a question that I want to ask Marvel fans--how many heroes are too much? Currently, the Avengers has Iron Man, Captain America, Hulk, Thor, Black Widow, and Hawkeye. However, right now it looks like Guardians of the Galaxy will be a lead in to The Avengers 2. Both will feature Thanos. In addition, we already have Ant-Man and Doctor Strange confirmed. So for the Avengers 3, we may be looking at Iron Man, Hulk, Thor, Captain America, Black Widow, Hawkeye, Star-lord, Drax the Destoryer, Rocket Raccoon, Gamora, Groot, Yondu, Ant-Man, Wasp (maybe), and Doctor Strange. That is a possible 15 superheroes. So, could a possible third Avengers movie be too cluttered? Any thoughts?