I'm extremely pleased to see that each and every province is going to be receiving so much character! As a geography major, I greatly appreciate any detail that can be added to the regions of the game. And I have one small suggestion to add.

I haven't played EB extensively enough to have seen every Wonder (or other building unique to certain provinces, however they are referred to), but all of them which I have seen provided bonuses to law, happiness, and/or trade. I was thinking that for EB2 it may even be appropriate to apply negative modifiers to specific provinces via the new Province Buildings.

I don't know ancient history enough to suggest many applications of this, but it is my understanding that certain provinces were generally more rebellious than others. Judea/Palestine comes to mind, but I'm sure there are other examples. As an example, I could imagine Jerusalem having a permanent +5 Unrest modifier applied to its Province Building. I'm not sure what the mechanical differences between Happiness, Law, and Unrest are, but it may be appropriate for some provinces to have permanent modifiers to these.

There may already be other ways of designating provincial rebelliousness without using buildings, but I don't know enough about modding the game to know. Just a thought.