I think the main issue is that ZOS is pretty tied when it comes to making decisions bout lore. They are only responsable for the lore in ESO.This lore has strong ties with the lore in the other elder scroll games, which are developedby Bethesda. So all official lore has to go through channels consulting the writers in both subsidiaries. Even if they consider making it official, it takes time to put it through channels. So the fact that you didn't got an official response is actually a good sign (still don't get your hopes up though). A no is easily given. A yes takes more time.