I'm not sure about this change. Historically many conquerors let families continue to rule areas they conquered such as what Alexander the Great did and this will prevent that.
Athenian democracy
Nice, color coding families will surely be very helpful.In all interfaces each family will also be assigned a color, to make it easy to quickly distinguish what family they belong to.
But are conditions for a character rising to form his own family really that restrictive?This is something that can happen at times. The mechanic is soft in that if somehow a family rises and places you over your current cap then another will fall. This means that for instance if a Minor character rises to be king of a monarchy then another family will likely be pushed out, with all members turned into minor characters.
Could you get rid of the filling bar for rebellion and civil war. Just pop a notification that a rebelion/civil might happen soon like in CK2.
I don't think rebels come to the ruler and say "hey we are unhappy, see you next month, kiss"
What might make it real interesting is if the numbers part of a character's stats were hidden. We could see if the character was "lively" or "dull", "Arrogant" or "humble", etc, but the numbers, nope. Kind of a crap shoot when hiring a guy, just like irl.