Both games I've seen from this logger bring one thing to mind: I wish something had been done about what the AI does when it peaces out the Soviet Union. Germany full-annexing everything or Siberia becoming border gore hell are not satisfying. I know it's secondary to most people, but the way the peace deal logic works makes my head hurt.
Unfortunately, don't count on this happening anytime soon.
Podcat described this as a "huge undertaking" on Twitter(Note: use of quotes here denote his exact words). Frankly, I'd expect to see this maybe two years from now. It seems we get about two new systems per expansion, following the new model established by Man the Guns. We get one free with the update, and one exclusive to the DLC. In Man the Guns, this free component was the fuel system, and the paid component was the naval rework. In La Resistance, occupation and resistance rework is the free system, while intelligence is the paid one.
A huge issue with the game right now is the AI's inability to handle supply. Also even just from a competitive MP and singleplayer standpoint, many players have requested fleshed out logistics. I believe a logistics and supply rework will come before a peace deal rework. So, in following the model, it's likely that the free system added in the NEXT DLC after La Resistance will be a supply and logistics overhaul, with the paid component being either a defensive/land warfare overhaul, or wunderwaffen(the odd one out will be the paid component of the following DLC I predict). As such, then it would logically follow that the free rework in the DLC following the next one will be peace conferences. If the current trend holds, and without an increase in the size of the HoI 4 team we have no reason to expect it to change, that would place a supply/logistic rework to about one year from now, and a peace conference rework to about two years from now. This is my prediction, at least.