This is such a sensible post!
One of the tactics being used by TRAs in the wake of the very clear UKSC ruling is spreading confusion - it's all so difficult/nothing is clear/we need more guidance/the ruling has just produced more confusion...
It hasn't. There is, as WandaSiri says, a clear, straightforward tried-and-tested system: 'everyone uses the facilities appropriate to their biological sex.'
I posted yesterday about the difficulties, and expense, in providing unisex toilets in existing buildings, given that the building regs have very specific requirements for what a 'universal' toilet is, and a new label stuck on a women's or men's toilet doesn't magically make it a 'universal toilet'.
I sometimes have difficulty with words - it often takes me ages to compose a post and the discussion has moved on by the time I hit 'post'😕
Yesterday I was racking my brain for the word I wanted to apply to the 'third spaces' solution - it was 'glib'.
It's very easy to say 'the answer third spaces!' but nobody seems to be thinking about the practicalities - the disruption and expense caused by constructing building-regs-compliant unisex toilets in all existing public buildings.
And new building have to provide separate single-sex toilets to comply with building regs, so unisex toilets will have to be in addition to, not instead of, women's and men's toilets.
The workable way forward is to stick to the law, the building regs and a system that has worked fine until a group of men decided to lay claim to women's spaces.