The evil Brainiac, seeking to upgrade from collecting cities to collecting whole worlds, harness the power of the Lantern Rings in order to shrink the Earth, forcing DC's greatest superheroes to join forces with the Legion of Doom to stop him. That's something I'd like to see.
It seems my favorite DC Comics moments always revolve around superheroes and super villains banding together to fight a common thread. There's just something about the dynamic of these two opposite forces dropping what ever good or evil they're doing to hang out.
The phenomenon is best illustrated in the final moments of the latest trailer for LEGO Batman 3: Beyond Gotham.
Shut up, Joker.
LEGO Batman 3: Beyond Gotham is due out this fall on everything.