Really, if I was for some reason in charge of making a DC Cinema Universe ideally I would want to start off with a Superman, Batman and Wonder Woman movie since they're the trinity of DC comics. I'd want to do indiviual films of Aqua Man, Green Lantern and Flash too, though Flash could be tricky. Only one I wouldn't give his own film would be Martian Manhunter since he's more of an observer type character. He'd be better off used to tie all the movies together leading to the Justice League payoff.

I feel like I'm forgetting someone.