Hear me out here:
Gina Torres as Catwoman
She’s the right age to fit into the Batfleck timeline, a total goddess, could totally kick Batfleck’s ass and he’d thank her for the privilege and we know she’s great at both action and being classy as fuck.
Just imagine BatCat played not as a budding almost romance but as a romance that has been, she knows every trick in his book and she knows when to play him and when to stand on principle and help out, like an amicably divorced couple.
It would be the best.