I'm not sure if I'm the only one that thinks this way, but it would make more sense that this new mechanic would only activate by building a new authority object for village or personal claims. To this extent it would not alter the daily life for most individuals / groups, unless they decided to construct such an object.
The added effect of this would be that people are generally looking for more aesthetic features to add to their homesteads it makes this a perfect opportunity to make something with a basic functionality along with being nice to look at. Something people could equally decorate as they do with the Village Idol.
It could be constructed with Dreams, to make it tie in with the spirituality / magic of the game, to explain why the claim is further protected from visitors.