The correct borders aren't as important as is the treatment of minorities who'd end up at any side of the border. Therefore I hadn't proposed precise borders to be set up, only proposing coherent borders w/o enclaves and exclaves, meaning that Germany (incl. Austria, of course) and Hungary could (but not have to) still get a share of territories they didn't get IOTL but put up with insular cases like German-speaking Iglau/Jihlava in Czechia and having the Szekler Hungarians in a Romanian Transsylvania.
As it's inevitable that practically every country in Central Europe would have had ethnic nationals of their own in neighboring countries that might or might not be endangered, practically every country, new and old, between the Rhine River and Russia should be required to partake in a comprehensive treaty framework of mutual control of minority rights with an EEC/EU-like economic cooperation on top of it. That's another thing I find important, well-fed people hardly revolt and the misery of the vestiges of A-H was tariffs at places where they didn't use to be. As we have the power of hindsight in this scenario, we are essentially morally required to do this.
Member states of a Treaty Of Mutual National Justice:
Germany (always incl. Austria, rest is negotiable)
Poland (eastern border at about Curzon line)
Estonia, Latvia, Lithuania (incl. Vilnius)
Czechia and Slovakia (whether united or not)
Ukraine (i.e. at least Western Ukraine around Lwow)
Hungary
Romania
Bulgaria
Yugoslavia (in which iteration ever)
Albania
Italy
Greece (and maybe even Turkey)
(further enlargement possible and desired)
As it's inevitable that practically every country in Central Europe would have had ethnic nationals of their own in neighboring countries that might or might not be endangered, practically every country, new and old, between the Rhine River and Russia should be required to partake in a comprehensive treaty framework of mutual control of minority rights with an EEC/EU-like economic cooperation on top of it. That's another thing I find important, well-fed people hardly revolt and the misery of the vestiges of A-H was tariffs at places where they didn't use to be. As we have the power of hindsight in this scenario, we are essentially morally required to do this.
Member states of a Treaty Of Mutual National Justice:
Germany (always incl. Austria, rest is negotiable)
Poland (eastern border at about Curzon line)
Estonia, Latvia, Lithuania (incl. Vilnius)
Czechia and Slovakia (whether united or not)
Ukraine (i.e. at least Western Ukraine around Lwow)
Hungary
Romania
Bulgaria
Yugoslavia (in which iteration ever)
Albania
Italy
Greece (and maybe even Turkey)
(further enlargement possible and desired)