lore-friendly transitioning methods

[Cilia]

Through aether all things are possible. If it can create gods, it can act like 'mones.

While the applications of aether are manifold, there has yet to be an honest capital G "God" in the setting. No matter how powerful, there has never been an actually divine being in the setting. (So far, anyway.)

Anything outside of being straight in FFXIV, like most Japanese Entertainment, is just used as a cheap punchline

Hey now, while I agree there's a lot of bias against more diverse gender identities and sexual orientations in Japanese media (as one might expect from such a conservative country), it's not all just throwaway jokes in (what wider audiences would consider) bad taste. Eden is a thing, and the clear romantic subtext between Ryne and Gaia and Mitron's ambiguous gender identity is never really treated as a joke. (Yuri romance is more acceptable for reasons that still elude me! ... but it is what it is.)