I'm one of the few that didn't think the Green Lantern movie was a complete waste. I enjoyed it. It's actually in my iTunes, too. Having said that, DC needs to stop rebooting and rebooting the Superman and Batman franchises and start working on the rest.
Wonder Woman needs a movie. Or a TV show... but not the turd that they were working on. That was God awful.
Aquaman is one of the few DC heroes who hasn't been seen anywhere outside of Smallville. Flash has at least had a semi-tolerable TV series...
I think using Cyborg would be a great idea.
As for the rest of DC, their main heroes can't be put on the screen because they spend too much time on side project properties... just do the main heroes. Does the writer you hired do justice to the character? No? Fire him, hire another. DC: GET IT RIGHT.
Having said that, if I see one more Batman origin movie, I'm going to choke a sucka.