With the new faction system also coming out, I hope this is continued into a blend for when changing government types or a new ruler assumes their position, there would be additional dissent based on current dissent and how radical a change is occurring. For example, a massive subset across 3 worlds believes in the opposite values of the ruling government, and a new heir for the government comes into power, and so those factions might have a chance (depending on conditions) of declaring a war for secession. This would allow for some interesting developments, how do you handle it when your own people rebel, do you change your bombardment of the worlds, do you bombard them at all or do you negotiate a peace. It might have ramifications depending on what the main populous is, if they're independent-like thinkers, and a section of the empire wants to break off out of a desire for a different path (harmony vs war), you might have a bigger issue on hand later on if you roughly treat the separatists, and the same might go for other empires that are sympathetic to their cause.
Declaring that there can be no negotiations, and only war if they dare to attempt to leave your righteous rule might intimidate them into surrendering, might start off a war against them, or may lead to further diplomatic contact to see if a resolution more favorable to you could be reached. In doing this you will likely gain the respect and admiration of other authoritarian regimes, but will suffer in the eyes of more diplomatically inclined empires, or even pops in your own empire. If you handle it particularly badly, you could instigate a massive rebellion from within, and a war with all those empires that you were on uneasy terms with, as they would seek to liberate the people whom you were oppressing.
