@syhr Alas, these kind of talking points are already being tested:
https://www.independent.co.uk/voices/disabled-toilets-single-sex-bridget-philipson-trans-b2981866.html
This discussion from UK Quakers is more inclusive:
https://www.quaker.org.uk/documents/re-statement-of-policy-on-provision-of-trans-inclusive-facilities