I'd always rather see female superheroes--as well as female characters overall--in films and TV. I've preferred films where women were the lead characters, like Salt, Haywire and Smilla's Sense Of Snow, to name but a few.
I loved the Wonder Woman animated film, and hoped to see sequels from it. Now I see why nothing more came of it. It's a shame that the only way we can get to see Supergirl these days is only if she's guest-starring in a Superman animated movie. I'd love to see Supergirl--not to mention Batgirl--in her own adventure.