I am playing as the Suebi, and I notice I get the event that allows me to increase my Civilization Value quite often, but it only does so on one city (the one that has the lower score, unfortunately), while the one at 30 never climbs at all. Seeing as you need a score of 50 to change government types or colonize nearby regions, is 30 a "hard limit" for tribal governments? Is there any way to switch governments or increase the Civ Value of my capital beyond 30?