The simple answer is to coin new language to allow the men-who-don't-feel-like-men and the women-who-feel-they-have-something-significant-in-common-with-the-men-who-don-t-feel-like-men to name themselves and be recognised as a meaningful group without taking away the existing language that refers to women as a meaningful group based on our common physical sex.
The reason this will never be acceptabled to the men-who-don't-feel-like-men is because actually, this is not, despite all their language of I-just-want-to-be-myself, about their identity at all. It is about the forceable appropriation of our identity - of female identity, language and resources. They demand the right to redefine us and what is and is not significant to our lives and experiences so that they can define themselves as the same as us, and also demand that we may not have the symetrical right to define ourselves as different to them no matter how significant those differences may be to us, because they weigh their own judgement of us as more truthful than our own.
They need us to continue wommaning along as we always did because it it specifically that - the external target of our identities and our lives that they do not experience in their own right - that they want, and nothing to do with their own inner self knowledge and experiences at all.
And once you realise that, you realise that far from being "anti-trans position on the little issues", holding the line on female language and female existence being significant in its own right is the very heart of this. If we do not accept that, that female people do exist as separate from male, we cannot defend anything that is built upon it.
All the "compromises" ultimately boil down to some level of acceptance that some men, in some circumstances, are more like women than they are men. and no, I simply do not accept that, because to do so is to reduce womanhood and the diveristy of women into something lesser and stereotyped, into something that men project onto us not something that is innate within us.
The true compromises, the true half ways, are (1) new language, and (2) new intra-sex or mixed-sex social identities.
Anything that requires women define ourselves as less than we are, or rewrites our lives and experiences to downplay the impact our sex has, in order to accomodate trans identifying men is not a compromise, it's a subjection.