I'm just thinking, enough people know about Robin/Dick Grayson as a character, that it would be easier to do Nightwing as a Batman-less series than Birds Of Prey, which just didn't have enough familiarity going for it as far as Huntress, Oracle, and Black Canary. They had to bring in Alfred for God's sake! It'd be interesting to see Dick moving to Bludhaven, with a quick voiceover explaining how he had to leave Gotham to get from under Batman's shadow, and now, he's on his own. . .Enter: Nightwing!! That could take all of a minute! Have him be unemployed(w/ hefty trust fund) for a while, then eventually have him join the police force. Should be interesting.