I think it could be cool, although there are a lot of other female superhero movies I'd rather see first (Wonder Woman, Supergirl, Batgirl...)
or, and stay with me on this one.
"The All Female Justice League" featuring, Wonder Woman, Bat Girl, Supergirl and new recruit Catwoman.
Not exactly sure what the plot would be however.
other possible members include Black Canary and Hawk Girl.