Now the game has the same promotion and demoting speed for all type of governments:
If government type should also have an effect as you say, we could make for tribes, promotion and demotion speed reduced to +1 for Citizens and Freemen, as they do not want to become tribesmen.
But all of this is for naught, if we do not change the desired POP ratios for type of government too. Now the differences between governments are very small, and every territory looks almost the same:
For example, in a city for the three types of government you will have the following desired pop ratio for a population of 100:
City of 100 POPs | Monarchy | Republic | Tribal |
---|
Noble | +15% / 112,5% = 13 POPs | +15% / 125% = 12 POPs | +15% -7% / 113% = 7 POPs |
Citizen | +30% / 112,5% = 27 POPs | +30% + 5% / 125% = 28 POPs | +30% / 113% =27 POPs |
Freemen | +40% + 2,5% / 112,5%= 38 POPs | +40% + 2,5% +7,5 % / 125% = 40 POPs | +40% / 113%= 35 POPs |
Tribesmen | 0% / 112,5% = 0 POPs | 0% / 125% = 0 POPs | 0% +10% / 113% = 9 POPs |
Slave | +25% / 112,5% = 22 POPs | +25% / 125% = 20 POPs | +25% / 113% = 22 POPs |
Tribal governments should have more tribesmen and negative desired ratios for citizens, freemen and slaves, like they do for nobles. Using the previous city example:
City of 100 Pops | Tribal -10% Nobles, Citizens, Freemen and Slaves and 30% tribesmen |
---|
Noble | 15%-10% / 100% = 5 POPs |
Citizen | 30% -10% / 100% = 20 POPs |
Freemen | 40% -10% / 100% = 30 POPs |
Tribesmen | 0% +30% / 100% = 30 POPs |
Slave | +25% - 10% / 100% = 15 POPs |
This City population distribution will better describe a tribal city.
Finally, IMHO convert/assimilate should be to the dominant religion/culture in the territory not the primary religion/culture of your nation.
My two cents.