A little confused, why would the Austrians, risk being invaded, and occupied, just to be occupied, while there army shattered by the Allies and where would they invade? Swiss? Doubt it, mountain alps and France on the other side for reinforcements just seems to such a horrible risk. Yugoslavia? Maybe, but still far fetched. Czechoslovakia, well if your gonna Annex Austria, why wouldn't you use politics like what Hitler really did.

I don't think this "what if" can go anywere, as its stuck in the Austrian mountains and even if you destroyed your enemies army (maybe in the skies, and on the clouds!!!), it doesn't make a ton of sense, but I wont flame you because you did say you were tired and would go into detail about it

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Time is only enemy you'll never get rid of.