In hoi2 it was always a pain to negiaote advance peace deals. For instance, if germany for some reason wants to make peace with the allies before they've actually taken all of france but doesnt want to give up any germany has conquered, germany has to demand all of the provinces which it is occupying which means you have to know the names of the provinces you want. It would be a lot easier if you could do some sort of cease-fire event, which make peace on the new current borders. I also noticed in some of the pictures that provinces in hoi3 are broken up even further, provinces which were split apart would have a larger revolt risk because people would want to be reunited with the rest of the province, the revolt risk would only apply to the nation which didnt have cores on it.