I don't think so, if everything goes perfectly, the new tree will give you seeds all over Southeast Europe. From Prague to Istanbul. With a core population of 85,000,000. Whereby I have to admit that 2 other nations have to take certain non-historical focuses.
Google translator
Do you find it historically plausible to gain a core population of 85,000,000 with Yugoslavia?
Unless I'm using mods, I would like an authentic World War II experience even when going alternative history. Communist Japan? okay. Communist USA? okay. Fascist Russia? okay. Unlikely, but okay.
But don't add in the game literally impossible scenarios. It breaks immersion. There's a fine difference between historically alternative and historically impossible. Alternative history, however unrealistic it may be, has to diverge from real history at some point.
- Yugoslavia can get 85.000.000 population core.
- Yugoslavia can get core on all of Transylvania and other regions that had no Yugoslavs to being with. How realistic is that? How much sense does it make?
- Yugoslavia can get core on all of Transylvania and other regions on the democratic pro-West path. Again, how realistic is that? How much sense does it make?
What they did to Yugoslavia is more far fetched than forming the Roman Empire or Bulgarian Empire. It's just cringe.
White the old focus tree had a cool focus that gave you +25% political power, because Yugoslavia desperately needs political power. And kept things realistic.
The only thing I disliked about the old Yugoslav focus tree was puppet Croatia, which could be avoided if you were a player, but the AI always made it.