Before the reboot, I really wanted to see Cassandra Cain become the new Nightwing and team-up with Flamebird, Bette Kane.
I also wanted to see Charlie Gage-Radcliffe become the new Batgirl and team-up with Stephanie Brown who would be "Dark Lark."
Now that it's been announced that Babs is going to be a costumed crimefighter again, I'd love to see her become the new Flamebird and team-up with Nightwing (Dick Grayson) both as crimefighters and romantically.
If Bette Kane is going to be her aunt Batwoman's sidekick, she should be Batgirl.
I'd kind of like to see Cassandra be the Huntress in this reboot. She should be adopted by Bruce so she's Cassandra Wayne. She can team-up with Stephanie as Dark Lark and Wendy Harris as Oracle.
There'd be a new Catgirl, Helena Kyle. She'd either be Catwoman's daughter and date Batman's son, Robin, or she'd be Catwoman's younger sister and date Wildcat's son, Tomcat.