+1 SD
I think the A Tyr-Mun is a ridiculous move. Here's a ton of reasons why it's ludacrous
1) Knowing that Austria and Germany are relatively tied together in 1901, you're ticking off one of them right away and wrecking his game, and making the other nervous. This causes France to tend to fight Germany and collapses the western front very quickly. This allows a large France to either work with Austria (who is already nervous at you anyhow) to fight against you, cross the stalemate line early, and maintain a E/F alliance, or to fight England and *then* swing south across the line.
2) The unit has precious little to do there. So you've managed to take Munich and...what? You can't hold it, and you're simply going to be forced out next year by an angry German. As Germany, I'd never be happy with losing a home center to any country. I'd rather have a standoff in Belgium than an Italian army in Munich--after all, Munich is a key point along the French-German stalemate line, and if you're not controlling the units there, then you have no say over whether or not you get invaded by France. Now, when you're forced out, you get bumped into one of several locations:
i) Tyrolia - now you're back where you started from for no real gain
ii) Bohemia - granted, you threaten 2 Austrian centers, but you could have done that last year, and you're simply behind by a full season of where you could be
iii) Silesia - this is the only location that actually gains you progress, but it's against Germany. Now you've dedicated yourself to a German fight but don't have the free range to continue to pump units into the north. The fleets you've been building are useless, and armies take a while to get into the action and can get bottle-necked while you try to fight a war that you have no real business being in in the first place.
The ONLY way that I see that this can work out is if you have France and England making progress against German, but then you'd have to have several key guarantees
i) after Germany is gone, you will be picking a fight with France and have English help and Austrian neutrality (if it's still an option and you don't have to worry about Turkey moving in from the south) or
ii) You're picking a fight with Austria, which means that you need French neutrality so that he will be fighting England.
If one of these has to be in place. If not, then you're probably headed to some rough years.
On a side note, I do agree that Austria and Germany aren't really "allies" in the beginning. More just helpful/neutral at best in most cases.