By the later set of ogres in the Things Betwixt, somewhere behind the ~~stoned~~ petrified mob, there is a sarcophagus on the shore. Climb in and your character will climb back out gender swapped. I know there have been transgender players intentionally creating a character with their assingned-at-birth gender just for the catharsis of getting to transition so easily in a world that doesn't give a shit either way.

A random, obscure feature, but somehow they opted to create it and I love the implication that someone cared enough to write the logic.