So here is my idea, in which the Weimar Republic is ISOT to Kaiserreich,. However, only the lands that Wiemar Republic owns is transported so it causes a whole lot of legal issues
First of all, we got the Polish Corrdier, Alsace Lloraine, and Luxemborg, so now they would need to answer, do they keep it, or not. The lands are still going to be a hot mess of legal issues
United Baltic Duchy might declare themselves succesors to the Kaiserreich. MittleAfricka ends up exploding because of a poor budget
The countries of Brest Livotok form a anti russian block to combat the russians
That sort of thing
Any other ideas?
Also, ANI in Italy would try to court the Wiemar Republic, plus the Entente would also try to do that to gain a foothold in Europe