I was cast in 'Thor' back in 2009, so it sort of took me out of the running for anything tied to DC Comics.
Feminism is sort of like God. Many people profess to believe in it, but no one seems to be able to define it to everyone's satisfaction.
Research your idea. See if there's a demand. A lot of people have great ideas, but they don't know if there's a need for it. You also have to research your competition.