Money is hardly ever correctly modeled in any game. At least not in any i have seen so far.
Following this thread (and trying to steer it back to topic, which is, you know, HoI4), it seems that money played a major role in driving germanies expansionsism, once the rearmament had reached a certain level. So then: Should troops in HoI cost maintainance in money, and that to such a degree, that once you got an army, you better use it, or else you will be crippling yourself (at least for germany)? Should countries be allowed to go into debt (not only with each other, but with their banks/population)? Should these debts be the origin of money (as in real life, pretty much) - meaning some (most? all?) countries start with some debts and the sum of them equals the money in circulation globally, which only increases, whenever a country signs up for more debts (at an ever increasing interest rate)?
For all these apologetic posts found in this thread might be good for one thing: They show, how germany ´felt´ pushed to act agressively, once it had its army half way up. Sticking with the status quo for a prolonged time, while also trying to maintain and even expand the armed forces simply seems to have not been an option for germany, not least for monetary reasons. If that is true, then it follows, that the amount of ´apeacement´ that could have been expected from ceding Danzig depends on the impact on the financial outlook of germany - and its willingness to keep growing its military instead of consolidating. If acquisition of Danzig means that the finances can take the strain of continued rearmament for another half year (f.e.), then the next step of aggression of germany is to be expected within that time-span.
EDIT: This could also give the yardstick for the events leading up to ´Danzig or War?´: If Germany rearms (which the AI will) it will run into financial problems, and whenever those reach critical levels, it triggers an event. This would be like going from a hard script (AI triggers DoW between sept1st and 3rd 1939) to a soft script (AI-Germany rearms at a pace, that will probably force it to trigger DoW around end of summer/early autumn 1939 - and the other events at according dates before that).
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Edit2: Now, the deciding factor weather those events will be accepted could be your own threat - so you have to continously build up your army in order to have a decent chance to get austria, czechoslovakia, memel and possibly danzig or more without triggering general war. By building up said threat, in order to be able to trigger those events without risking general war, you will also have built up the need to trigger them and the means to face general war, should it still happen against the odds.
The events could be ´de-sequentialized´, meaning you are free to choose which to take first (some may include others, like going to 1st vienna directly would entail the german acquisition of the Sudetenland, and some fictional upped demand against poland would include Danzig), but the probabilities of triggering general war with each are skewed in a way, that would promote the historical path (e.g. Austria requires way less threat on your part than czecheslovakia, by default, to lower the chance of allied intervention) and with each one you have already triggered, the others get ´more expensive´. Wether these probabilities of allied intervention are openly displayed should be a matter of chosen difficulty level, btw (yet, better combined with intelligence/espionage).
As for money: Each province (or at least some) could have a ´credit potential´, which defines how much money you can create out of it. You do that by selling bonds for interest. When you sell a bond, credit potential is evenly subtracted from your provinces and the acquired sum put into your treasury, from which each month the interest flows back into the provinces. The rest can be used for trade, promotion of international relations, conducting intelligence, boosting equipment research in factories, and paying your soldiers. When you run out, you cant do these things anymore. Bad things happen, especially when you fail to pay your soldiers.