Feo Takahari
Auror
But it only works one way. You never see a movie open up with a "I'll show you how badass the MC is" scene where he chops up a group of nameless female bandits with his blade.
On the other hand, you do see slasher films that begin with a lustful and materialistic girl getting chopped up by the slasher. This has interesting implications for what qualifies as a "bad" woman in film versus a "bad" man in film. (Then again, there doesn't really seem to be a "slasher" genre in novels, so that's somewhat apart from this site's focus.)
Back to the original topic: I've been thinking about this, and I think the perfect model for what a "strong" woman in film has become is Astrid in How to Train Your Dragon. On the one hand, she doesn't really have any flaws, beyond the flaws of her entire society--she's strong, brave, and a better fighter than any of the men. On the other hand, she doesn't really get to do much, and the film could easily be rewritten to remove her. She seems to exist primarily so that Hiccup can have a love interest.
I don't mention this as criticism--there's nothing inherently wrong with Astrid--but rather to point out that she's not what anyone has been asking for. When people said "We want strong female characters," the women they were thinking of had much more in common with Hiccup than with Astrid--they wanted women who could take center stage in the story, struggling and growing on their own personal journeys. I'd like to see more female characters like that, and I don't think that means eliminating any other sort of characters--I want more art, not less.