I’m not necessarily opposed to this but how do you habdle the rising debt issues that Austria was facing during their martial law period of occupying Hungary. From what I’ve seen even OTL without compromising with Hungary Austria would’ve gone bankrupt.Maybe. I've posited elsewhere that such a drawn out war could be the shot in the arm needed to resolve a lot of Austria's political-will related deficiencies. Less because of removing the Hungarian elite or anything like that and more just because it would necessitate higher military spending and a more amicable settlement for Hungary's minorities -and the Hungarians themselves.
How do you manage higher military spending while also breaking the Hungarians to heel and maintain Austrian sovereignty in action/avoiding the ottoman pitfall?
The Hungarians weren’t going to be an easy foe for the Austrians to defeat by themselves so a couple of years of extra war just means more destruction and spending which makes the threat of default even more pressing for Austria.