How can I provide a before/after when these trans laws and diktats have only just recently passed. Let me ask you a question. If the law states that a trans person can use the facilities of her choosing AND the law doesn't define what a transgendered is outside of how one self identifies, how does anyone prevent a man from going into the women's locker room if he proclaims to be transgendered? In fact, to try and prevent him from entering would be an act of discrimination.
Maybe I'm odd here, but the solution all of this seems absolutely simple to me. Gender segregated washrooms, etc, to me, seem to be a vestigial product of our (America's specifically, but the west in general) continued clinging to outdated, almost Elizabethan mores and concepts of shame.
It's the 21st bloody century.
Stop worrying about nudity and everyone else's body and focus on the ACTUAL problem here, which is the violence inherent on our culture.
You want to prevent women (both cis and trans) from being unsafe in the washroom? Stop teaching people they should be ashamed of sexual desires and start teaching them shame for their desire for violence.