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Hello everyone and welcome to another development diary about Europa Universalis. This time we have a feature for Common Sens, that is so large that it is spread over two weeks of development diaries. It is how we interact with your subject states.

In the subjects overview screen, there is now an additional button where you can open up an interaction menu with all your subjects.

Today we’ll talk about the tools you have regarding vassals, marches and lesser union partners.

Placate Local Rulers
This can be done on both vassals and marches, and lets you pay prestige (if you have positive prestige), to reduce the liberty desire of that subject by 10%.

Embargo Rivals
This is a toggle you can put on any subject. If it is on they will embargo all your rivals as quickly as their diplomats can travel. However, this increases their liberty desire by 5% while active.

Place Relative on Throne
This can only be done on vassals, and only when they have a regency. You can replace the regency with a ruler from your own dynasty.

Enforce Religion
This can only be done on vassals, unions and marches. This is possible if the subject is in your religious group, have less than 50% of Liberty Desire, and you have positive relations. Of course, this increases Liberty Desire by 50%, so its something you have to evaluate when it is desirable to do.

Scutage
This is a toggle that can be set to on or off on a vassal. When it is on, they will not be called into wars, unless declared war upon. However, they will provide 50% more of its income to you.

Subsidize Armies
This is a toggle in marches, where if on, you will send up to 10% of your manpower to them each month, to fill up their manpower pool.

Fortify March
This allows you to build or upgrade a fort in a march, where you as overlord fronts the build costs.

Enforce Culture
This is the option if you got some diplomatic power to burn. You can swap the primary culture of a lesser union partner to your culture for a power cost, but this is only doable if they are below 50% liberty desire and it will increase it by 50% as well.

Siphon Income
Unions usually do not provide money to their overlord, but history is full of rulers who took from one part of their realm to provide for another. This action lets you take 50% of a lesser union partners yearly income if you have positive relations. It will increase liberty desire by 10% but also reduce relations rather dramatically.

Support Loyalists
Unions don’t have any local ruler that needs to be placated, so instead you have a toggle where you spend 10% of their monthly income each month, while reducing liberty desire by 20% as long as its active.

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Next week we’ll talk about protectorates, trade companies and colonial nations, and their unique actions.
 
This is all pretty neat, but I'm currently thinking of the usability of each of these, and so far my opinion is this:

Placate Local Rulers
As long as the prestige price isn't huge, this seems great to ensure loyal subjects.

Embargo Rivals
This seems extremely minor and usable only in fringe cases.

Place Relative on Throne
This doesn't seem useful at first glance, but putting a king might encourage the vassal to claim stuff.
PS: I'd really love to be able to put a different nation's/dynasty's relative on my throne if I had a regency - for a legitimacy hit. (Please.)

Enforce Religion
This is probably the most useful option, especially helpful since it usually takes two wars to vassalize + force convert large nations.

Scutage
Unless things changed, vassal income is abysmal, so I'll probably never use this. Even if I don't plan to actually use vassal's units, they prove to be a great deterrent from offensive wars.

Subsidize Armies
The only time this seems really useful is if it's already late game, when it doesn't really matter anyway. Otherwise extremely situational.

Fortify March
Hopefully we only pay the ducat cost (not sure what the mil point cost will be with the new forts, but would rather avoid it altogether).

Enforce Culture
How much DP are we talking here? This would be really useful if only it worked on vassals. Otherwise it's so-so.

Siphon Income
Will probably do it from time to time... Micromanagement ftw.

Support Loyalists
Seems pretty useful in combination with other options.

The remaining question is how long will all these liberty/relationship changes last for these actions, and whether they decay at all.
 
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Now i'm wondering, will Austria inherit the unions if the King of Burgundy event fires, or will they be freed but Austria will have a claim?

The Naples PU comes along with Aragon in the Spanish Wedding (if Aragon hasn't lost it beforehand), so I would assume the Low Countries PUs would follow along too...
 
Assuming the LD ticks down same dynasty is also +15 relations iirc. Also making subjects embargo if they're in the same node as your rival might affect PP.
 
Looks like liberty desire, royal marages, unions and marches are getting some love. Placate Local Rulers, Scutage, Embargo Rivals, Support Loyalists, Siphon Income - all deal with liberty desire and nets you some money or hamper your rivals a bit. Bunch of smaller features tho it will probably add up if used consistently.

- Enforce religion with those rules can be used nicely, convert smaller heretic states to you religion. Not having to everything convert manually is great.

Place Relative on Throne
This can only be done on vassals, and only when they have a regency. You can replace the regency with a ruler from your own dynasty.

How will Place Relative on Throne work and what do we get with it? Why would i want to click this, do they become lesser union partner then? I can annex the vassal after ten years, but we have to wait for a chance to integrate union partner.. If they become lesser union partner then we could use Enforce Culture option which only works on union partners (not on vassals).
Also, vassals take +1 diplo slot, while union partners do not cost diplo slots if i remember well.
 
The chance for that happening has to be 1% or sth, since it basically never happens to me.

If I want to integrate them I'd rather spend some MP than wait 200 years for the odd chance to get them for free
They have to have your dynasty and die without an heir (what would cause a PU for a normal nation) so its pretty rare.