Also, on the issue of too many heroes - it does not work well with movies, agreed. But, if you pick up the Civil War mini-series, everyone and their mother is in there. It is a matter of finding the right balance. And, Avengers 2 did not find it... Nonetheless, if you compare Civil War Movie with Civil War Comic, there is maybe 1% of the number of characters duking it out in the movie.
Furthermore, the 'event' that led to Civil War is FAR more serious than what is presumed or alluded to in the movie (Winter Solider's existence and being hunted).
Also, my hope is that we get... The Dark Avengers.
The sequence of 'events' in Marvel is:
- Civil War
- Secret Invasion
- Dark Avengers (as well as Dark X-Men, etc.)
- Hero Age (return of the good guys)
They can pretty much skip Secret Invasion. Even though Secret Invasion created the Dark Avengers. The events of Civil War should be enough to sprout the Dark Avengers.