very good question.
I suppose on one level it should be about what it's always been about: freedom and equality for women.
But these days it's possibly a bit more complicated than that. women earn on average less than men (so they are not equal), but in most cases that's because they have chosen career paths that have lower earnings (because they are free, but obviously they are only free within the constraints of the current hegemony).
Some would argue that the way forward is to change the hegemony but is it? do women really choose to work part time becuase it's the norm or because, well, they want to work part time. I know I do. I'd work less if I could.
I think the way forward is to reduce the inequality in the first place, and to reduce the inequalities between all people, not just men and women. In sociological terms I probably have more in common with a male teacher than I do with a female city "worker". I think there is a role for feminism here, and there is certainly a role for feminism in terms of the great porn and grooming debates, but it is not, thankfully, as necessary as it once was.