1. How can you not fall behind in diplo tech and diplomatic reputation annexions all this vassals? 2. Do you deal with rebell by givning autonomy or just alot of micro 3. Mercs?
2. Giving autonomy reduces Absolutism, it's not good after The Age of Absolutism. I believe you can mostly deal with them by stacking negative national unrest - Monarchies' legitimacy, Humanist Ideas, -2 Unrest Admin Advisor, etc.