Lost Art, I understand what you mean - but in what way have you lost sex segregated spaces because of the GRA.
I would imagine most of the fully transitioned transsexuals in the 6000 or so who have a GRC because of the act were using toilets and changing rooms before exactly like they were afterwards.
So it did not practically change that reality or increase the numbers as only those people appear to be interested in getting access to a GRC.
The rest only want to do so IF we remove all the safeguards.
Whilst I entirely agree that we should not be broadening the scope of access without reasonable gatekeeping, in reality whichever of those disenfranchised hundreds of thousands choose to enter safe sex spaces are likely to do so with or without a GRC I would imagine.
Any encouragement given to them seems to be via the Equality Act that has confused the picture as to whether as GRC provides any right of access to the non excluded spaces to anyone without one simply on the premise that that act uses different words than the GRA.
There was a thread on here the other week discussing the law via both acts trying to establish how a GRC effected anything. There were differing opinions but test cases were cited that suggested the GRC provided some protection not in the equality act but that both contained some single sex exceptions.
So I would take that as meaning the real problems are:
1: The Equality Act rewriting definitions and that the role of the GRA within it possibly needs clarifying and/or tightening.
2: The mooted changes to the GRA that would significantly alter the numbers who are challenging these spaces and the range and degree of transition, if any, they will possess. Not to mention their mental stability to access those spaces if you remove that from even being evaluated.
If the above is done we are left with two options. A GRA that continues much as now or abolishing the GRA.
The debate then is whether safe spaces are more protected with a GRA than without.
Either way it will not stop them from your perspective being invaded to some degree I imagine.
Plus my guess is if you try to repeal the GRA and take us back to 2004 but also say enforce toilets and changing rooms around biology only (as in XX/XY) that is not literally enforceable, of course, so will in reality be done by way of perceptions.
If women are now more sensitive to appearance that will result in cases of XX women mistaken as being trans women who will get challenged, and passing XY men who are challenging the removal of access and who might have ulterior designs getting in.
If you segregate entirely this way I think the main problem will be the ones who will follow the law and go elsewhere will be the honest trans people who do not want to upset anyone, possibly putting themselves at risk by doing so. And the ones who will deliberately challenge the exclusion will be the very ones you are hoping to exclude - probably fired up by the exclusion to test it for the publicity or to hope they get attacked and use that to further division.
So I am not sure how repealing the GRA would help any more, and possibly even less, than stopping it from being broadened in the ways being suggested.