I think its far more likely that people want a reboot of some sort, maybe not the full on reboot, but some stand alone movies, much like the animated ones, which figured out long ago that you did not need to keep retelling the origin over and over and over, or remaking the character 15 times.
Problem i have with robin, the boy wonder is like 13 14 year old boy, hollywood seems to be rather reluctant to put young kids in in serious type movies, kick ass proved t can be done and done really well, but if we have to have a robin give us the young dick grayson robin that makes sense in the movies, then you can move onto nightwing down the road as robin grows up, ala harry potter, along the way you got tons of material to explore between the two and how they have their ups and downs over the years.
DC if they want a justice league should be setting up characters, especially wonder woman which seems a rather tricky thing to do, mold her after the justice league wonder woman a strong, smart woman that is not afraid to stand against anyone even superman, figure out a good "screen" costume and get it done.
martian manhunter, flash etc, of the series the two weakest characters, they had their moments, but especially MM seemed he was more a third wheel most of the time rather than a help, they would need some serious love to get them off the ground.