About Ymaryn Econ Vampirism:
Since basically the only vote in contention is the one about the boats, I will reveal the fact that taking very large influxes of refugees, especially if it includes actual territory, has negative effects on the polity been drawn from. In most cases recently you have been drawing +2 Econ from three or more groups, so they get a bit of narrative grumbling but it doesn't actually impact their Econ score.
You are currently drawing from one group and one group only a very large number of people. In a weird twist of fate though, the Hathatyn aren't entirely screwed due to other factors.
1. When we take refugees we are taking Econ from the target polities.
-When we take refugees
and land it is especially damaging to the target polities.
2. Generally, most of our CA and LoO triggers have been from the HK, Thunder Speakers, and the Xohyssiri. This spreads the damage out among them, so our +2 Econ is not enough to impact them any more than in narrative. Rounding error, as it has been brought up. Higher Econ costs where we get +4-5 or more are more damaging.
-We don't know if it is one to one transfer. AN has said previously that between civs different stats have a different "value" so 1 of our Econ does not equal 1 of the HK's Econ(I'll go looking for the quote if anyone asks). Based on this I would say it is not one to one, but it is close when drawing from all three of the Lowlander civs.
3. In our most recent trigger we are taking
specifically and only from the Hathatyn. Our +8-10 Econ is going to be a massive hit to them, some high number of their Econ.
-Speculation here: They seem more focused on mining and are very much not as good at farming as we are so I figure their Econ "value" is lower than ours, 1 point of our Econ is greater than 1 point of theirs.
Depends on the circumstances. You sort of did that here, in that taking in the villages would encourage more refugees to come to you both as a sign of your power and because it would destabilize the Hathatyn further as you offered an alternative to their current leadership.
4. This is in answer to the question "If we suck off enough econ to cause someone to lose stability, does that mean we then get another opportunity to suck off more econ?". i.e if a civ loses Stability for X reason, we Econ drain them -> we cause them to hit negative Econ and thus they lose more Stability -> we can get the opportunity to have another round of draining. However, that "depends on the circumstances" from AN tells me it's up to his ruling. The traits of the civ being drained and the context surrounding the drain probably have a lot to do with if this "Double Draining" can occur.
5. This means RoO is bad for them, as has been brought up. The initial -1 Stab hit means they hemorrhage Econ, and if we take the big enough hit it can actually cause a cascade into even more damage as they go negative. Thus the other civs around us have needed to evolve alternate means of raising Stability.
-This is mostly unconnected to if we give them stability back when we drain them. Why I think so is that: The potential Econ damage from RoO's initial drop is still too risky to keep using it. I mean logically what does it matter that they get 1 to 2 Stability back from us, when they were at -1 Stability in the first place and our Econ drain puts them at -3 or -4 Econ or worse?
6. In response to the Mega Drought the Xoh developed human sacrifice policies, during their formation. This is in the update <Wrath> when the Original Lowlander CIv broke. So, it seems that if you equate TGG with Human Sacrifice, then they got it on their own without our influence. We had not really descended from our foggy hills by this point. And they haven't really needed to change since because the Grand Sacrifice does not have an initial stab hit for us to trigger CA on. So we really have few means to drive them to negative Econ, unless they are already at low Econ and suffer a hit to stability and then we take the biggest hit we can. And nowadays they are really damn far so they are kinda out of reach. Speculation -> I think we are mainly drawing from the HK and TH now with maybe a little TS.
The HK on the other hand, seemed to have developed a direct counter due to proximity. By WoG the WC collapsed because of our draining on top of other factors and then the Hero King succeeded in uniting them into the HK. This collapse is probably in part because the WC had RoO only, maybe one or two other actions. So what does the HK do? They evolve Order Above All, which probably upgraded RoO or one of the Enforce line of actions (probably one of the Enforce) so that it did not have an initial Stability cost. Then the HK complete the Law and suddenly they have a Stability option that allows for Stab gain at no cost except Centralization. I do believe we also got Proclaim Glory from them too, which is another option which does not have an initial Stability cost.
Pure Speculation -> Considering their constant civil wars I figure their Centralization must be relatively low constantly and triggers problems every time they have a Stability drop. I figure the reason it is low is because it must drop every time we drain them significantly, possibly through an evolved form of Pioneering Spirit that behaves semi-symbiotically with our CA. So they can just pop an Enforce Law and boom their Cent is back in the semi green area. More speculation -> Perhaps this civil warring comes from the advanced Pioneering Spirit trait's con. Much like our Quality of it's Own trait, they have a civil war malus that triggers if they hit negative stability when at low Centralization, or possibly high Cent as the province chiefs buck the yoke of the King.