When I hear crayfish, I know that is not a fish (also know they are darn tasty). When I hear Black Woman or Chinese Woman, i know that is a woman of a particular ethnic background. When I hear transwoman, I know that is a male that takes on the trappings of appearing to be a man, and vice versa for transman (female that wants to take on the appearance of being a man). I agree that using the word transwoman could be viewed as a concession. However it can be looked at as a descriptor of a particular person: a male that takes on the trappings of appearing to be a man. This would be useful if adhered to by everyone, TRAs not trying to force concessions and some segment of the population just being arseholes. And for the handful of things where it is beneficial for separate spaces to exist, this approach would allow that. Spaces for each category.