Yeah, I'm siding with Vulnus on this. While we're probably protected under some subsection of Fair Use, and we're still really obscure as it is, the possibility of getting into some kind of legal kerfuffle is still dangerous. A new, completely homebrewed lore following the vein of "humans expanding into the universe, finding weird ass aliens in space, digging up even weirder shit elsewhere" seems like our safest option, and allows for the most freedom when changing and expanding the lore.