I would love an Ed Benes cleavage show'n, thigh-high booted Zatanna
I think it's very safe to predict a Jim Lee Justice League line shortly after the september relaunch.
I don't think any more brightest day figures will be solicited beyond the waves we already know. Maybe a con exclusive or 2 could happen still though.
Maybe 1 more wave of Flash point. Yes, lots of potential, but it'll be long over by the time a wave 3 could see the light of day.
There is lots of untaped potential for future waves of Batman Inc and/or whatever you want to call Modern Batman lines beside what Morrison is doing (Snyder's Detective). heck, Batman Beyond will sell too, and Batwoman has had some costume tweaks since 52 to earn a second figure when her series starts (finally)
I'm guessing 2 waves for Arkham City.
I would also love some Lee Bermejo Batman/Joker figures.