There's a situation where several planets will be allowed to secede from your empire with like zero consequences (they get a 10 year truce). You can prevent it by landing troops and building forts but if you don't then you lose like 6 systems without a fight.

So my fanatically loyal troops just decided to lay down their weapons and surrender instantly? Then my emperor just went "oh well, it's not like we have a fleet and an army" and signed the 'recognize these random ♥♥♥♥♥♥♥♥' accord? What?

This was absolutely terrible game design.

Finally, the MAIN mechanic of the DLC is bad. Vassals get to basically decide 100% of the terms as befits them. Even when you forcibly vassalize someone, the default agreement doesn't include anything but a war agreement and the ability to annex them.

Again, did my militarist empire just go "Well attacking you was super mean so I guess you get to dictate the terms of your subjugation"?

Please fix this. This is genuinely the first DLC I've ever disliked on this game.

There's a situation where several planets will be allowed to secede from your empire with like zero consequences (they get a 10 year truce). You can prevent it by landing troops and building forts but if you don't then you lose like 6 systems without a fight. So my fanatically loyal troops just decided to lay down their weapons and surrender instantly? Then my emperor just went "oh well, it's not like we have a fleet and an army" and signed the 'recognize these random assholes' accord? What? This was absolutely terrible game design. Finally, the MAIN mechanic of the DLC is bad. Vassals get to basically decide 100% of the terms as befits them. Even when you forcibly vassalize someone, the default agreement doesn't include anything but a war agreement and the ability to annex them. Again, did my militarist empire just go "Well attacking you was super mean so I guess you get to dictate the terms of your subjugation"? Please fix this. This is genuinely the first DLC I've ever disliked on this game.