User blog comment:Rassilon of Old/Building the DC Cinematic Universe, Part II/@comment-252417-20120730124505

Marvel also had Jon Favreau on The Avengers and the Iron Man films. You need at least one person that's going to be commited throughout and if there are people who stay on for one film then they should still be willing to contribute something that adds to a bigger tapestry. More importantly though the company needs to have it planned out from the beginning. Not just decide one day that Green Lantern is going to set up a Justice League. I think that last part may have been more appropriate for Part 1 though.