What about the ******* Legion of Doom...how hard is this? That is what made Superfriends so great...each character had a guy they always fought and would be totally epic. Plus, how much sense does one bad guy against 5 or 6 good guys make?
QFT
Just look at the animated Super Friends series and how that progressed. It started with single villains / crises and the original 5 Super Friends. Then they expanded the ranks and started bringing in some more heroes.
THEN enter the Legion of Doom, and that was one of the best runs that the show had. That was called
Challenge of the Super Friends IIRC. There was a nice wide variety of vilains, and it worked well.
A few years later they went down the Darkseid / Apokolips road during the
Super Powers era. But there was a progression in the series that ultimately led to this. If DC / Warner Bros try to force this, it's probably going to fall flat the way the Green Lantern movie did.