in the context of your question, i think that feminisms would have to be local, and enable people to determine for themselves what it means. in that way, feminism would lose some of its power, because it would be meaningful mostly as a reminder to focus on a particular set of problems, as a subset of more general questions of power and agency. cross cultural studies are interesting (as always) because they remind us of the variety that might be open to us (but that quickly turns into cultural tourism in today's world, so...)
in today's world, feminism, like anarchism (like any perspective on the world, i guess), is a way to start/have conversations about the lives we want to live.