I’d include both completely, but would have to think real hard about Bulgaria
Don’t leave Istra out of Yugoslavia. They were really big on antifascism. It’s not right to let them continue suffering for it. At that point you might as well include the Dalmatian coastline and islands. Amazing for the economy, and very low nationalistic tendencies, especially on the islands. And let’s not forget regions of Krajina that weren’t completely ethnically cleansed.
Think about Republika Srpska. Literally today Stuart Peach came out to say that it can’t be independent. Shit’s really heating up