Wild and strange AUs or crossovers (NOT modern)
I'm looking for AU that change the nature of Planetos and Westerosi/Essosi culture, magic, social structures, etc in some innate way
I don't have stellar examples
There's the crackfic A Gift from the Gods, or a Curse on spacebattles where everyone gets a sigil companion. But it is crack and also doesn't go far enough. It would fit my request if everyone had always had a sigil companion and this had significant downstream effects on history, like an ASOIAF / His Dark Materials crossover.
A few crossovers I've read kind of fit, but don't go deep enough in change
There's also a fic whose name I can't remember, where Jon is a girl and enters the harem of the emperor Aegon (son of Elia). Everything is basically Ottomanized, back to the Conquest as far as I can tell. That one was fun and I want more and much stranger
Anyway, yes, please throw your best AU or crossover at me, as long as they make Westeros / Essos wild and strange and aren't modern