I want an ability to threaten a country to release/cede me provinces with my cores on my vassal's cores on them. Could be locked behind certain techs, so is later in the game.I want to be able to send ultimatums to said countries (let's say I'm prussia, I have brunswick as vassal, and munster has hannover, with a brunswick core. The "ultimatum" screen would be quite similar with the peace talks one, you ask what you want, and they may accept or refuse, the AI could consider the total strength of countries involved, and decide if they should give in to my diplomatic pressure and cede the provinces (this should establish a truce, if they agree, so you cannot chain-request provinces from them), or have their country burned down and more likely concede more in the peace deal.I want a different attrition system, in which you suffer less attrition in the border provinces if you attack a country until you control them and grows exponentially the farther you go from your border. This way you can fight your enemies at the border, rather than their doomstacks go straight for your capital.I want when I see that a country is at war, to be able to click on the little fire icon, so it brings up the war screen, so I can join the war on the defender side, and if I'm the most powerful nation on their side, assume war leader and ONLY be able to force white (kind of like in Victoria II)I want that only alliances/marriages take diplomatic slots, vassals, military access, guarantees and such should be free. Also, if you go over them, should detract from your diplomatic reputation, not from your monarch points.That's all I can think right now.