I don't understand why it's necessary for trans people to have a specific place for them to go, like, at all. We have been using public bathrooms for the last hundred years. It's never been a problem before, and it's not a problem now. This entire thing is manufactured outrage about a problem that doesn't exist.
The way I see it there are only two realistic outcomes. We either let all women use the women's bathroom (crazy concept) or we have the gender neutral communal bathroom/showers from Starship Troopers.