TBH: the higher execs up the food chain of WB doesn't know what to do now. They're like headless chickens running around getting their ass handed by Marvel time after time, only thinking about relying on Supes and Bats. And in a bad way - make it "dark", make it "brooding", make it "serious". THAT DOESN'T WORK!
They should think about, why CW's Arrow works, why the pilot of the Flash 2014 works, why people are drawn to those Marvel characters, what roots them. Why the script of Green Lantern was bad, but Ryan was not bad as Hal (IMHO they should have turned "First Flight" into a movie). Why WB is strictly seperating the writers of DCAU from DCMU? The strongest asset and cards they could play is using those writers from the animated universe to script a screenplay for the movie. Paul Dini, Bruce Timm, God bless Dwayne McDuffie - those were the spearheads of the Animated Universe. Heck! I'd pay to see a Justice League: Doom reshot frame by frame.