I mean other than the Justice League. Do you think they should each lead a team that expands more on there part of the universe? Like for instance:
Batman - The Outsiders or maybe a Bat Family book. Dealing with the more street level stuff, maybe have them deal with Gotham and Bludhaven to give them more of a challenge.
Wonder Woman - The Furies. Have them fighting magical gods and monsters.
Superman - L.E.G.I.O.N. Fighting more cosmic threats that Supes cant on his own.
Cyborg - Metal Men. Working for ARGUS hunting down tech for the Red Room
Aquaman - The Others. This is already happening.
Green Lantern -The Lantern Corps. Same as above.
The Flash - The Speed Force. Deals with time travel and alt time line stuff.