Politics, Taxes and Laws

So, i had this idea while playing Europa Universallis Rome.
What a bout a politics system?
I know its a vague ideam but i do have some kind of list on my mind:

1. Parties (of factions), each with different bonus and malus.
2. The Leader (player) would be able to choose from one of the parties (later we could set some events to change the party of the ruler).
3. Elections, every x turn the country would have a election, and based on the player performance in general (military, taxation and military).
4. Taxes, quite self explanatory, the player would have the options to change both global and local taxes adjusts, this would have an great effect on popularity and economy.
5. Laws, the player would be able to pass, for example, a law that enables forced conscription, or taxes-specific laws, or citizenship (for ancient-based or fantasy maps). Every of these decisions would have a varying impact on popularity, economy, recruitment...
5. Popularity, the index that sums up how much people like him, it would be affected by every aspect of the game and would affect military, election and economic efficiency.

I think thats it. i know it isn´t a great original idea and canbe very well out of the scope of the game itself, but i think it would add some nice depth on the gameplay and immersion.