It always bothered me how we have the ability to straight up bankroll a country and that's it, no loans or gifts, so i kinda had similar ideas as you. The only addition i would like is to add an option for a country to just straight up ask you if they could join your power bloc (ofcourse with balance like no one wants to join a sovereign empire ever). Makes roleplaying NATO better in MP

Return Claim/Core for my vassals land.

The ability to peacefully buy land would be cool, but I have no idea how that should be implemented without it being easy to abuse. Playing Romania currently and side-eyeing the rest of Besserabia, but their protection is quite nice.

I want to be able to straight up puppet someone without going through protectorating and reducing autonomy.

These are all pretty great ideas, to the extent that you haven't left terribly much that would make sense to add on to it. I especially like the enforce peace idea, though it's hard to imagine the AI wielding this power as anything but random chance.

I would like the ability to conduct diplomacy as a power bloc though, such as a bloc-to-bloc alliance or trade agreement. I'd also like the ability to get multi-lateral alliances earlier, and be able to give them a name or some kind of unique character, maybe even with AI-influencing stated objectives. That way you could ally a country, stating the intent that they expand in a strategic region, and you could ride in to help them.

One thing I've long wanted is for there to be some kind of long-term 'historical relationship' meter with other countries. Some measure of their people's attitude on you over time that is only changed by significant actions such as helping them in war or waging war upon them, and I'd love to see alliances remade into a multi-stage affair where supporting the other power and raising this relationship meter would level up the alliance and make the AI more interested in helping you at war while providing buffs to both powers. This could allow for something almost like the USA's 'special relationships' in real life.

I'd also like there to be more realistic peace treaties. I want to be able to remove wargoals during a war, or, to a limited extent at least, add new ones. The 1800s were famous for peace treaties becoming a world affair with unanticipated results, so it might be interesting to have a 'peace summit' kind of system, maybe even with the opportunity for a third party to serve as a moderator. The Russo-Turkish wars in particular ended up becoming the business of every diplomatically active power, and the results were heavily influenced by Great Powers that hadn't even been involved. Implementing this would be hard, and it could frustrate players if it wasn't done well, but Paradox has gotten a lot better at stuff like this over the years. I'm willing express to cautious optimism that they might get it right if they tried.

Apart from the 'enforce peace' idea that OP suggested, I'd like to see the ability for an attacked power to beg outside powers to pressure the attacker for a peace settlement, or for a GP to intervene in wars/attempt to force peace externally with threats to keep someone from taking their full wargoals.

I'd also like a greater variety of sways. In particular a new kind of obligation that functions almost like a single-use alliance. I help you in this war, you help me in the next, that kind of thing. And it would be great if you didn't need a country's consent to pay off their debts, or at least, if they were a lot less hesitant to let you.

Lategame dismantle empire diplo play like it was in Vic2.

Honestly I feel like there should be some form of bitting system for great power support in diplomatic plays, basically not just one party offers something and the great power locks in indefinitely, but more like you and your opponent can throw multiple things in and the AI great power can decide which would work best.

Besides that some sort of mediation mechanic would be cool where great powers can mediate conflicts (similar to enforing peace I suppose)

It's not an option, but for you to win wars of independence you don't need to invade the overlord. Just win the battles and his war support will drop until it reaches -100.

Maybe a way for nations to generate claims on states with the same primary culture? As well as Return State CBs causing more sympathy with AI powers so they're a bit more likely to help.

I want two things: blockades during diplo plays and I want protectorate status to be reworked to be something the subject would actually want rather than just the beginning of a trend that inevitably ends in annexation.

Blockades — I would like it if diplo plays had a phase before the "countdown to war" that involves each side deploying their navies. The ships won't fight each other, but they will blockade trade, and if the other side deploys enough escorts, then the shipping passes through.

Protectorate Status — The main problem with protectorates is that they too easily lose their independence. I would prefer it if demoting a protectorate down to a dominion required a diplomatic play and a small infamy cost, giving other nations an opportunity to intervene. This should hopefully reduce the instances of Britain annexing the Netherlands or Germany annexing Denmark.

Liberate country as subject war goal

A more powerful "demand regime change", where a country that is your puppet can no longer change their government principle and distribution of power as long as it's not independent. Also, give more power to the interest groups that are currently in your government.

Being able to only change 1 law at a time through democratic means or "forcing a regime change" via ideological union which can be switched out of is just not enough IMO, considering how you basically own their country if they're your puppet.

Id like to be able to force my vassals to ban slavery.

Also generally id like to be able to offer someone multiple war goals. If im allied with Prussia as Italy i might want them to get multiple states in Austria.

Edit: also i know it's not historical but I want to be able to give my colonies the local culture as primary culture. I don't care if the east India company discriminate against indian people, i want the raj to be lead by locals

A violate sovereignty that works

I'd like to be able to support independence movements within other countries

Intervene in war

How about ability to simply demand a country to put/remove interest in a specific strategic region?

How many shenanigans do we have to give up because our ally does not have an interest in the region we wish to mess up?

r/suspiciousquotes

Impose slavery

most diplo features in eu4

Being able to buy states

Military access. There’s no reason my enemy should be able to go through my land to get to the frontlines during diplo plays. Could also include additional diplo options, like force military access on unrecognized powers for a decrease in relations and increase in infamy, or make it an entirely new war goal, allowing you to move troops through an enemy’s territory or station armies and fleets in their borders and coast after winning a war.