So keeping with the idea of a more federal than dualistic monarchy, I would propose having a congressional type system where each hereditary region of the monarchy was represented in a federal congress that was very states rights heavy. So like the County of Tyrol and the Mark of Moravia be represented as states in a congress. This could diffuse the ethnic relations to much smaller, manageable levels. This would likely have to have a POC around 1848 or 1867 when there was a lot of clamoring in the government. It would've also appealed a lot more to the Habsburgs themselves since they were so vehemently against nationalism.
That makes a hell of a lot of sense. I never thought about it like that because I've always rather thought that the multi-ethnic part would eventually tear itapart regardless, so I just tried to find a scenario that would give me the most plausible way to have a Hungary greater than it is today.
That's my main question, would Hungary be divided into it's constituent counties? I think that would be the best way to divy it up. Additionally, that would at least mollify some of the more moderate gentry, so long as the former kingdom was still named something along the lines of "The Lands of the Holy Crown of St. Stephen."
I have a map at home, if you could provide some more details I'll take a crack at it tonight.