Well, the perfect movie for me, would be written by Christopher Nolan and the Russo Brothers, and directed by Zack Snyder and Joss Whedon.
The idea is to get two writers, who have already made well-received superhero movies, who write intricate, gritty, and thrilling stories.
The directors are both experienced with superhero movies and CGI, and add a unique, comic book feel to their movies (i.e. Zack Snyder's slow-mo, and Whedon's large scale action scenes). To be honest, Snyder can make some great movies.
I think that JJ Abrams could also be amazing. He's never really done a superhero movie before, and he could add something new and fresh to the table:
What do you think?