No question on their quality o quantity, they are very good!
I was merely thinking about something similar to Deus Lo Vult, where you capture a city in a few turns the character will get a trait "Acting Governor", Governor of Vienna" etc. depending on the city and its name.
So I was thinking maybe a Druchii ould get "Overseer" when he captures an Asur culture town, while the opposite would be "Acting Governor" when an Asur gets into a Druchii town. But I will look into it myself.