In The Culture series by Iain Banks, gene modification is so advanced people can will themselves to change sex without surgery over I think some months. The process is so effective procreation is possible - one character, a male, loved being pregnant. So he'd transition, have a baby, and go back to being male every couple years. And it's just super normal. In fact, people who never change sexes are viewed as odd.
Oh 100%. I don't have dysphoria but think of myself as NB anyway. I'm comfortable in my body but I'm certainly curious. If transitioning weren't as difficult and costly? Yeah totally let's see what girl me looks like. I think I'd be fairly hot as a girl haha