The whole internal politics of EU really needs to be improved upon. I am tired of having fully maxed out sliders on Free Subjects and Innovative, being a Republican Dictatorship, having Ecumenism and Humanist Tolerance national ideas, and still getting events regarding unhappy nobles and clergy that hurt my stability. From my understanding, my nation does not have powerful nobles and its clergy doesn't have enough influence to cause revolt risk across the nation. There ought to be a new screen specifically for internal factions, and the provinces they have the most influence over. You could choose to try phasing out or disenfranchising nobles, clergy, etc. individually through national laws, decisions, and local provincial rules. Nobles could start to feel pinned, and corral local provincial leaders together to build a rebel state over a region. There could even be individual kings/lords within your kingdom, who would be harder to control and more likely to form a massive rebel state, to better represent diplo-annexing.
"Rebel Risk" percentages are too abstract and do not properly represent internal politics, not to mention that once your nation gets an army of about 15 regiments you can take down any rebellion with ease, even at 0% army maintenance.
"Rebel Risk" percentages are too abstract and do not properly represent internal politics, not to mention that once your nation gets an army of about 15 regiments you can take down any rebellion with ease, even at 0% army maintenance.