I wish they'd just bring back the old series completely. It left stuff open, as I'm told (didn't see the last season yet), and I'd rather them focus on action rather than comedy,
Still, if they're going with a half hour version of a DC Nation short cartoon, I'd rather they go with Plastic Man. Ol' Plas got screwed out of a series back in 2000-something, and thankfully found a place in Batman Brave and the Bold. With Woozy Winks instead of that dumb Hawaiian guy to boot.
The Kyle Barker Plastic Man deserved a cartoon, and I'm glad we're getting shorts, but that needs to be a series more than a comedy-centric version of Teen Titans.