Although this is not the first time this bad idea has been proposed, let's run it down:
1-there is no Super Hero Community in the movies, which the premise is totally dependant on.
2-as it stands, many of the principal players have yet to be introduced on film. There are no Avengers, much less New Avengers. There are no New Warriors. No SHIELD. There's no Cap. No Thor. No Spider-Woman. No Luke Cage. No Panther. Iron Man & Namor are still in early development stages. You wanna introduce them only to make them enemies?
3-Those who have are under different studios. This is yet another crossover proposal that ain't gonna happen.
4-the story, while entertaining, is just a bad idea. It hurts long-term continuity. The Registration Act is a bad idea. Superheroes supporting it is a bad idea. Superheroes opposing it w/no clear objective is a bad idea. (Not the opposition itself; as a black man living in America I can think of several laws that should've never come into being, & that were only defeated through active opposition. My problem is the way they're going about it. Fighting amongst themselves instead of taking it to the source. I'd expect this type of action from Magneto, not Captain America.) Spider-Man being Tony Stark's sidekick is a bad idea. UNMASKING SPIDER-MAN IS A BAD IDEA!!!!!!!!! Friends & LONGTIME allies turning on each other because they don't agree on a government proposal is a bad idea. Temporary amnesty for supervillains willing to help bring down non-regs is a bad idea. The FF dividing is a bad idea. CLONING THOR & TURNING HIM INTO A MINDLESS DRONE IS A BAD IDEA!!!!!!!
5-Iron Man's position has turned some fans against him. You wanna make people hate him as soon as he reaches the big screen?
6-it would confuse the hell out of the uninitiated. People who don't read comics on a regular basis like their superhero stories simple, not convoluted. There are far too many angles & agendas to put into a 2-hour movie.
7-There's still too much to do on the individual Marvel projects to even consider something that huge.
8-can you even imagine what the budget would be like? Spider-Man alone costs upwards of $100 mil to make. Then you add Iron Man, the FF & all those others? No studio's gonna shell out for that.
9-if I see the Iron Spider sidekick suit on a real live human being I'm gonna f'in' puke.