Well EB has a system to guide you through with "bonus traits" like:

- Uncomfortable Supervisor where basically the FM gets penalties in his attributes because he wants to stay in a city
and becomes
- Attuned Supervisor with bonus to management, unrest handling, etc

This can happen NO MATTER what his Ethnicity is - I only have Argeades atm but in my other games I have noticed it can happen to anyone.

The same goes for Warmongers who become Bored, when staying long enough in a city.

But I would like to hear if anybody of you has found any "formulas".For example:

- I try to keep Public Order above 100% (no yellow face)
- I look at Settlement details and try to balance public order.Meaning FM influence, happiness, law and military having about the same effect overall.
- When FM influence is the dominate factor in public order, most of the times the FM gets good traits as if he is the locals' man.
- When FM has + law and is sent to a settlement with high corruption then he battles it and most of the times he benefits of it (getting good traits)
- When FM has - to Unrest and is sent to a settlement with high Unrest ...the same as above
- When FM has + to Farming Output is good to be sent to settlements with poor harvests
- When FM has the Inventor Ancilliary is best to be put on a province with a mine

Also there is the population growth, where sometimes it is beneficial to keep it low, other times you become the "developer of the province" helping expanding it.This is something I want to look further, since in EB works both ways - IIRC in Vanilla if you keep pop growth under 3% you get negative traits.