We do need third spaces.
I can't upload a photo, but the public toilets in Frome's Market Yard are pretty good I think.
The block is brick built and nice to look at (not been in). 24 hour access. From left to right (5 doors in a long block, all opening onto the car park)
- Door with what I think is an all/either gender person ie the half dress-half trousers symbol (I took a pic but was too far away to see and the pic is a bit blurry), and a sign saying 'urinals'. Multiple urinals I am guessing.
- Single cubicle, woman symbol, man symbol, changing table symbol and disabled symbol. I think this is a Changing Places room.
- Single cubicle, woman symbol, man symbol, baby symbol, changing table symbol.
- Single cubicle saying WC, unisex, man and woman symbols.
- Last cubicle which says WC Ladies, woman symbol.
So women have the choice of 3 cubicles plus the disabled cubicle if applicable.
Men have the urinals plus a unisex WC. Men won't be sharing the urinals with transmen as biology prevents that - unless surgery does allow it?
Non-binary people can use the unisex WC if they don't want use the men's urinals/women's WC.
Transpeople of either sex have a unisex WC cubicle, or urinals as may suit some TW, or the female WC for transmen that wish to use it (seems unlikely)
The unisex WC is something my DH would use over urinals any day, even for a pee.
And importantly there is a dedicated women only WC, which respects women's needs and somewhat allays fears of stealth cameras and men peeing on the seat and floor.
Doesn't this set up cover all reasonable needs within reasonable constraints (space and budget etc)? Like you say PainInTheEar, what would be the objections to this amount of thought and effort to provide, and how would they go down?