I'm not sure if this change is how Marvel sees empowering women as strong(er) enough to take on a traditionally masculine roles. Or is this just a petty handout in the lack of Marvel's ability to create a "just-as-strong" role? This move has the air of cosplay pandering and in-the-box thinking. Having to steal a well established role to reboot a gender swap is lame.
I would have far more preferred if Thor had a twin sister, wife, or daughter that grew stronger than Thor and overtook the mantle of power from him. But a character do-over is such a cop-out.