Seriously, did Cass accidentally run over Didio's dog or something? Guy just does not give her a break!
Batgirl Babs would be ick, I like Babs as Batgirl, but she's been Oracle for too long... becoming Batgirl again would be going backwards in her life, I'd prefer if she became a new superhero altogether. She could convince Dinah to ditch Ollie and become the Red Canary! Or y'know... anything other than Batgirl.