Image from Wikipedia.org
I'm a DC Comics fan from way back, actually almost as far back as I can remember. I never cottoned to Marvel Comics, and only dabbled in other publishers' offerings (Charlton's being one, but they were sort of absorbed by DC, so same thing).
DC's biggest team superhero offering has been (for about 45 years) The Justice League of America. The lineups have changed over the years, sure, but any movie version will have to include Superman, Batman, Green Lantern, The Flash and Aquaman. So news of a movie version would be a letdown if those heroes were missing. Thankfully, the new Batman franchise is going well, the Superman franchise (while less successful) did fairly well, and superheroes in general are doing big business in cinema. The Flash is set for a movie treatment, and Aquaman has been featured in Entourage, and Smallville.
So I'm hoping that this movie, set for 2010 (2010? That sounds like the Jetsons' time period, doesn't it?), will be an extravaganza that will be the superhero movie that sets the standard.
I'm hoping that by 2010, the Wonder Woman movie will have been a success too, to give the movie a little more viability. A movie featuring all of these heroes would send fans (even old ones like me) into the stratosphere, if done correctly. X-Men, for all of its success, featured a lot of also-ran heroes, those with names unknown to most Americans.
But a movie featuring Batman, Wonder Woman, Aquaman and Superman? If it failed, the producers would have no one but themselves to blame.