If you went with the third option, would it still involve some gender identity stuff? You know, with Youmu corrupted mind trying to justify her 'girlyness' despite her obviously male appearance.
Cos that's always nice to see.. ^^

Oh yeah. She'd think that having balls and cock is 'maiden-like' even as her mind bends and breaks what maiden means to include 'savage cave dwelling hellhound tamer' Probably with some weird imp/goblin speech mannerism too.

Awesome! Also I wonder how she'd react to Nama if they're both imp/goblin things

I'm thinking a 'civilized imp' versus 'feral cave-imp'

Also emphasize a degradation/reversal of Youmu from 'Noble Samurai' to savage little monster femboy swinging around a broken blade and getting made that Nama isn't 'taming' the daemon boys/'proper maidens' like she's supposed too.

Namely through silly/smutty daemon sex.

While I know you're aiming to narrow the number of ideas down, I do sincerely hope that all of them get their time to shine, eventually.

Having said that, not sure if it's a general trend or not, but this is about the third time I've seen Sakuya being TF'd into Baphomet.

It's a very good fit.

Still trying to decide which one to focus on. Youmu like Yo-Yo the semi-feral cave imp (very explicitly broken blade and new one between the legs) would be a lot of fun because I want to cap it off with her basically running off and shanghaiing certain poor bookseller into being her new 'mount'/hell hound partner because she obviously needs to rescue Reimu from this rude city-imp that's dragging her around on a leash and collar.

But that's a bit more expansion, even if I really want to show/imply that the maidenhood of magical maidens is being properly 'altered' for new Gensokyo as the initial curse gets amplified from the power of those effected.

i love the sound of that third option! could be a fun spot to have some pronoun-fuckery

Already written/being edited...

Could do more of that... though I've been exploring the idea that 'Fantasy Maiden' is being redefined as 'male gay daemon bois' so it's more that they are being consistently annoyed that someone doesn't recognize a proper 'maidenhood', even when it's right in front of them.

But I do agree that the alternative could work too, perhaps especially given what a wringer I put poor (shorter) Youmu through... (In between hammering her down, and down into talking like perverted Gollum)