Anyway, my thoughts on the question:
Like a few people have said, issues around motherhood, its value, and differences in women's behaviour and desires in terms of that role from men. Generally if you eve bring this up it is all "well, I didn't feel like I wanted to stay home" and "that's just socialisation that women feel that way." The idea that women might equally be socialised to feel like going back to paid employment is the only way to be authentic and independent doesn't seem to get a mention.
I'd add to this any discussion that we are mammals and the kinds of sexed behaviour differences seen in mammals might also be found in humans seems a bit taboo. It seems like we are required to assume those things never happen unless there is overwhelming evidence that they do, even though that is not a neutral assumption.
I continually find there is a contradiction feminism in talking about certain types of class analysis and the contextually relevant individual behaviour. It's ok to talk about sexualisation of women in the fashion industry or media, but at the same time when women choose to buy into this its not acceptable to notice, especially for men, or for organisations like schools to make dress codes. Of course liberal feminism is totally ok with it all but in radical feminism it's very strange that someone making an analysis of the industry is happy to be critical and blame men, but if a teenage boy notices the same thing in his personal life he's to blame and needs to be re-educated. Somehow there is a fear of really acting on the class analysis in a way that some women might find personally uncomfortable.
I think the third thing I'd suggest might be abortion, I think at some point feminism may have to come to terms with the fact that women are as likely, maybe more likely, than men to have some kinds of reservations about it, often because they see it as mothers as a child protection question. I don't expect feminism to actually ever move on this but it will always end up excluding a significant number of women from their discourse, and that is worthy of self-reflection along the lines of, to what extent can we really claim we speak for women as a class. Nothing alienates people in quite the same way as saying you speak for them when you really don't want to represent their view only claim their numbers.