For example, if you allow "free library access" and then talk to that flower loving boy in Aldlyn, he will tell you he learnt a lot of new flowers from the books in library. If you "allow drugs" then the bartender will say he met a drug addict who made a mess in his bar yesterday. If you "ban slavery" but "allow monster pets" then the slave trader in the brothel will tell you he's thinking about selling monster girls as sex pets. It could even be like if you change back and forth a policy for too many times then a soldier will tell you he has to waste a lot of paper on documents because the laws keep changing.
This could add a lot of replayability without too much work. It will also feels like we're not just filling those 7 statistic boxes at the corner. Our decisions as a king actually affect many people's life.