An idea popped into my head a while back, about an Austrian creole language, a combination of all the languages in the empire together into one big mess...a microcosm of sorts of the empire itself. I made a scenario about how such a language would develop, it's a bit strange but bear with me.
Austria unifies much of Germany under their rule centuries earlier then Prussia OTL, and through a bunch of dynastic marriages with German allies in the HRE or wars and whatnot, ends up uniting with much of South Germany somehow. This bigger Austrian empire has a larger plurality of Germans, possibly a slight majority who knows. As time goes on migration within the empire becomes a lot more noticeable, such that eventually there's pockets of different ethnic groups all over the empire. A creole language develops that's a combination of German, Hungarian, Romanian, and the many Slavic languages of the empire, though German is one of the most influential thanks to the larger German population then OTL. Anyways my idea might be somewhat ASB, but can anyone knowledgeable on this topic tell me how an Austrian language like this might develop?