Tiger Beatdown has a post about how a lot of the authors of feminist utopias were in fact crazy oppressive in various ways.
Part 1: http://www.theawl.com/2010/10/the-fantasy-of-girl-world-lady-nerds-and-utopias
And especially part 2 (“footnotes” for part 1): http://tigerbeatdown.com/2010/10/25/underminers-journal-links-to-sexy-and-exciting-essays-edition/
I mean, the second article, the footnotes, ought to have been incorporated in the main text, if you ask me. because it’s really important, particularly that last point.
Also, when I think of “feminist sci-fi” and utopias, I don’t think about herland (even though I like it enough to have republished it with Strangers)… I think about Ursula K Le Guin, about Marge Piercy, about the feminist 1970s sci-fi wave when women broke into the mainstream of science fiction for the first time. I think that describing problematic utopias is kind of a cheap out. Also, the racism in “herland” is anything but subtle, and yet really -is- a product of its time: the author actually identified with and was active with anti-racism.