I understand the reservations some have and the wish to 'go call yourself men'.
I think with most of us you will find that a hard step, simply because we will have lived socially as women for so long in many cases. It would be like transitioning all over again.
Not saying it will be impossible for all. It can be debated.
Anything can and should be. I would not want any limits on what can be included.
We are agreed on the fact that biologically male is correct and that we do not change sex.
We are also agreed that YOU are women and WE are transwomen, so not the same thing, and not attempting to usurp the term women from you or to make you use terms like Cis which are absurd.
We also are agreed that we are not 'more' trans than anyone else and not looking to be regarded as more a women because of that and the best we can expect is to be regarded as possibly less threatening because of our acceptance of reality, the need for therapy and the extent of the steps we are willing to take to move away from male bodies.
These do not make us women but in some ways perhaps less men.
Also that safe spaces for women are safe spaces and that there are lines not to cross even with a GRC. And we are happy to not presume anything.
I think that is a start. It might be that the younger generation will find it easier to go the way you hope regards to definitions.