First thanks for commenting:
Sgt. Optimus-As would Serbia had a choice, since AH achieved total victory. Alternatives to the map i made would be that Serbia would be a independent puppet with a German monarch as leader. They would probably lose Belgrade to AH and Kosovo (I think thats the province Skopje) to Albania. So their power in the Balkans would be effectively reduced.
ROMANU-After some research I found out that that would be indeed a bad situation for the Hungarians. But the next best is that the Germans would install a German monarch to lead the country. You have to agree with me in the point, that Romania has indeed struck in the back of the Central forces and that should not go unpunished. And yes the situation I made is a kind of Federation of Germans, Hungarians, South Slavs and West Slavs and Ukrainians. But thats just because of the decentralization.
BritishImperial-First I want anyone who sees it comment it. Why couldn't Germany get Gibraltar? Navy or something similar? If you do don't agree with any of my statements, pls write a good reason why.
Italy after war faced inflation and unemployment. Not to mention the danger of an revolution. Without Benito Mussolini Italy would face a civil war, the socialists would take over or the socialists would gain quite some power in the government (So there is a chance that that happens what it did in the scenario). But im still more for a united Italy.
And if you were AH wouldn't you demand gains after the war. It would be only fair if they gained some land from Russia.
Here is a bit changed map from your comments:
ALB, SER and ROM are free nations, but are controlled by German monarchs, which were installed after the war.