I think feminism should include even more than just trans people. To me, feminism is about embracing femininity. Femininity is seen as weak, and anyone who shows the faintest amount of it is weaker because of it. That's what feminism should be against. I don't see why trans women or even feminine men are exempt at that point. Femininity, to me, can be a strength no matter who you are. Of course women are the biggest part of that, but it goes even beyond that.