I just played Austria into '39, tried to unify Austria and Hungary a couple of times but only succeeded with the help of Germany. I allied them early in '36 and shortly before the unification-war started, assumed military control of all the puppets of Germany, because they wouldn't let me use their units.
I think without using Germany, it's superhard to defeat Hungary. You have only 1 year of preparation, almost no manpower, less divisions and often enough, you face not only Hungary, but also Bohemia or Croatia.
Anyway, in my current game I succeeded in doing so but now I don't have cores on Croatia and Hungary, only on Bohemia and Galicia.
1 or 2 years later, I declared war to the Federation of Italy with maaasssive dissent hits (+30%).
So what now? Are there events to provoke a Germany/France war? Russia turned into the Soviet Union...are they going to ally with France?
The Entente has dissolved more or less without any wars. Only Canada and Australasia are still in it.
The American civil-war endend it a victory for the old USA, only California survived and peaced out with the whole westcoast.
There's a lot of stuff going on in Asia with Mongolia attacking this and that country and some stuff in China, I didn't pay close attention to.
For Austria, I have to say that as noted above, the fight against Hungary is VERY difficult, if you take the conflict-path and you even get dissent?!? The Austrians should love you for bringing new glory to them
And they have FAR too few Generals and Air-Leaders (ONLY FOUR!!).
Also, they should have more manpower at the beginning. You start with 10 MP?
Overall, I would raise the average-IC and MP of every country a bit. Now, it's too hard to raise a real army and makes playing small countries too uninteresting. Even countries like Russia have only about 100 IC which I think, is a little bit too few for such a big country.