i've only read one fic that, like, at least IMPLIED alleras was trans--it was a modern au where alleras was a side character, he was there as arianne's cousin, and the narration mentioned he had a slight stache which made me think of the sort of typical just-started-testosterone-and-can't-bring-himself-to-shave-yet stache but it was definitely just an implication. and i think that's the only time i've read it, which sucks because i keep HOPING people are writing trans alleras but it's always just, you know, cis-sarella-in-disguise. but i'm definitely going to write it someday (i've been saying that for probably two years now, but i WILL). i have to do nonbinary arya at some point too, and i have this really involved AU in my head with trans woman margaery tyrell...