Suggestions about mechanics:
1. Make a punishment for the increase in funding for the army, if there was no agreement on reducing Versailles. For example, sanctions
2. To make it possible, with a strong Reichbanner and left wing, to attack the SA at the expense of worsening relations with the coalition and the center party.
3. Strengthen the police and its capabilities to counter the Nazis. Because relying on the police, even through advisers, is always unprofitable. Although, it would seem, we control the legal force in Prussia
4. I propose to make additional events in case of the creation of the league. For example, it is possible to publish the results of the debunking of the myth, this will reduce the popularity of the Nazis, but will worsen the relationship with the coalition and with the DVP. Hindenburg can also do us harm, because he is actually one of the main authors of this myth and its main beneficiaries as one of the leaders of the Army in the First World War
5. Add Strasser. It seems to me that in addition to the idea of "sending a spy into the Comintern" in inter-party relations, something similar can be done with the Nazis. Make possible a connection with their "left" wing, the Strasserists. And with a certain level of "rightism" and cooperation with the conservatives, it will be possible to split the NSDAP before the end of the game.
6. Add event for "right wing turn" in the party of the center Ludwig Kaas.
7. Add an event for problems with the ruling coalition in Prussia if relations with the center party become worse than neutral.
8. Add the event of the Prussian Landtag elections of 1932, where the ruling coalition loses its seats and becomes a minority government. Formally, this and the disorder in Altona provoked Papen to putsch in Prussia, so this can be played out by the fact that it happens if we fail to resolve this political crisis in Prussia, and not just when Papen is appointed
9. To make it possible to put pressure on the Brüning government on the issue of reparations for our party interests. If we a in toleration and have a good relationships with Center party.
10. Instead of simply appointing Papen suddenly to replace Brüning, I propose introducing a scale (hidden or open) for tolerance towards Brüning, if he runs minority government. When the scale falls, he is replaced by Papen, etc. However, it falls gradually during a crisis, if he is in power by the will of the president Hindenburg. It's just that in a regime of toleration you lose in any case, because Brüning is replaced by Papen according to the script just like that — even if you formed contitutional coalition, but was not included in it. I think it's worth adding that ability to avoid the rise of the Nazis to power, although it should be made difficult. For example, so that the internal split constantly grows or the popularity of the party falls for each 2/3 month of the regime of toleration or something like that.
11. Add event on the growth of the SA with the appointment of Ernst Röhm as SA chief in April 1931. And what, for example, with a strong police, with the SA ban or the Reichsbanner/Minister of the Interior can somehow weaken this growth.
12. Make it harder for Otto Braun to win the presidential election. It's cheating to some extent that you can simply do nothing in the first round, so that Hindenburg leads, so that the Nazis don't support him in the second round — and at that moment convince the Center Party or the Communists to vote for you. It seems to me that it's worth making the conditions for their support in the second round more difficult. For example, that the Center Party always demand money for support, as do the Communists (or a stronger relationship with them is needed).
13. Add more benefits from reconciliation with the communist paramilitary. For example, that the communist paramilitary can now, together with the Reichbanner, defend our rallies.
14. Make the confrontation on the streets more important, especially in 1932 and 1933. If you are not going to have a civil war, the dominance of the far right in all security forces simply does not feel like a threat - well, yes, the SA breaks up your rallies, but nothing more. And if you do not pursue far left policies, these armed gangs will not do anything special to the republic. I think it is worth adding more events on the problems of the SA, if compared to the SA we have a very weak Reichbanner and/or police. For example, if we make an event in the media, the SA takes our newspapers out of the press - or destroys our radio stations if we do not protect them. Or when we are campaigning — our agitators get beaten. Or the SA even interferes with state policy, if they very strong: they forcibly dissolve workers' councils, attack trade unions friendly to us, or furiously demand the return of reactionary judges, investigators and laws after judicial reforms.
15. Make it possible to use a loyal Reichswehr outside of a civil war. The Reichswehr as an organization really only has some influence when there is a far-right putsch or Hitler comes to power - and even reformed and buffed up, they are usually weaker than the SA and Stahlhelm. I propose making it possible to use the army to suppress the right if they break the law or interfere in any way, as I suggested in point 14.
16. Make the campaign for the Young plan not free. For example, that you need to pay 1 resource from the party budget. Otherwise, it turns out that it is always profitable to conduct a campaign for it - and it costs us nothing
17. Make a clear and specific distinction between "bolster the loyalty of the police" and "purge the bureaucracy of reactionary elements" in Prussia. My suggestion is that purging bureaucrats does not increase police loyalty, but it does improve the effect of subsequent attempts to increase police loyalty. This shows the cumulative positive effect of police reshuffles and purging the apparatus of reactionaries.