[Suggestion] Improve or remove governance
If the idea of governance (keeping a champion in your city to improve it) is to be kept, it needs to be improved. As is, the path is really low-reward. Consider, to have an effective governor, first you must field a champion for a while. At least get them to level 3-4. Focus on governing traits, which are useless on the battlefield. (Why are we learning governance on the battlefield anyways?) Then once they are actually strong enough to be of some use and probably have equipment, take them off the field and stick them in the city.
What do you get for this crazy approach? Maybe 20% reduction in unrest and maybe a growth point. You're affecting secondary city stats. Something that would have taken 5 turns now takes 4. And maybe your cities will get to level 2 a bit quicker, but your food cap is going to wipe out growth at some point. If you'd kept they guy on the field, you'd probably be taking cities with him. Also, unless you have an Adventurer's Guild (who builds this improvement... it's expensive and you can only have one), you are consigning your governer to never gaining XP again.
I almost think governors and adventurers should be completely separate champion types...