"JLA movie getting of the ground"http://blastr.com/2012/06/that-justice-league-movie.php
"Hot scribe pushing 'Justice League' at Warner Bros."http://www.variety.com/article/VR1118055082
I get the feeling DC will, if they try and repeat Marvel's success with the Avengers they will surely screw this up.
Why not try a slow build, get their sea legs so to speak.
The Batman franchise is ready for a reboot after this current film, and Superman may or may not work, so why not try out a "World's Finest" film first?
Just start with Superman and Batman teaming up and then go from there, maybe the next Batman film series should be like Brave and the Bold, four or more films leading to a JLA film. Starting with B&B: The World's Finest.
A few solid Team-up movies with one or two of the others, all leading to a full JLA team up. You could really make the thing cost effective by overlapping some of the shooting schedules.
The characters who get the best responses then get solo films, and more screen time in the JLA films. The trick would be one big story that starts out as several great stand-alone team up stories, that all build up to a huge threat, like all the villains from the team-up films all banning together to form the Legion of Doom. And then you make the JLA film the big pay-off with tons of fight scenes and gratuitous moments. Even bigger than the Avengers.