A Power Girl movie could never be made, I don't think. At least one that follows her comic mythology. Her back story is so convoluted and messy that I don't think it could realistically be translated to film without having the audience go "Huh...whut?" They'd be better off making a Supergirl film as PG and SG are largely the same character.
That being said, I don't mind being proven wrong.
^If we're going with a red head, I'd sooner have a Batgirl movie.
Actually, I just want a Batgirl movie regardless. I'm not even fussy which Batgirl. Babs (Year One), Cass, Steph - all fantastic characters.
I'll agree with that (although, I am not a big fan of Cass).