Just wondering what other characters would you like to join? Do you want them to keep the legacy thing going? Or get some old characters back? I heard Dr. Fate might be coming back(interview with Bill Wilmingham).
I'd love to see Donna Troy even for just a short guest appearance or filling in for Powergirl. Hippolyta not having a legacy seems a little odd to me and she needs to get out of that Titans funk.
Another character I'd be interested in seeing would be Airwave. He'd have to be ressurected somehow but he's a legacy of his father and has connections to Green Lantern, Green Arrow, and Black Canary. Relatively obscure he'd seem like a whole new character to a lot of fans.