Okay, now, if you know DC's movies then you should know that most of DC's successes have been on their obscure properties. Watchmen, V for Vendetta, A History of Violence and The Road to Perdition. Here is the thing, though, only two of those films have comics that people bother reading and here is the thing, despite the greatness of those films, they immediately become a disservice after reading the comics. Why? I don't know because I don't feel that way, it's just that the majority does. Guardians of the Galaxy has been what people are calling a success for Marvel Studios because it capitalizes on an obscure property that was not that well known that now has renown. Well, the same could apply for Iron Man before 2008, not that many people knew about him. The fact is, the Guardians were a replacement for the Fantastic Four and would have had no movie had Fox not owned the rights to that film.
So, lets talk about a property from DC that is "obscure" in that sense that could not be that well known. I'd prefer to see a live screen version of Static Shock, for kids who grew up watching his TV show, who are also the ideal age that the movie would target in the majority, they would love it. Also, if they advertised it in such a way that is similar to the new TMNT film, I have no doubt that the kids would love it as well. Metamorpho is a similar character who has a surprising roundness to him despite honestly, being very weird and generic. He'd work better in a team film, sure, but what team? The Outsiders, it could be a nice little spin-off that doesn't need to be connected to Batman. It would be nice if it was, but that would make it little more than a petty spin-off, which is really what they wouldn't need. A team leader in Black Lighting, field commander in Katana and DC's got themselves a nice little property. Black Lightning and Blue Devil could probably carry their own film. Oh, and I forgot Grifter and Deathstroke in Team 7. Not too obscure yet? How about a film on Amethyst: Princess of Gemworld... yeah, not going to happen with a Wonder Woman film announcement looming. That is honestly all I can think of as of now.