Now that I think about it...I wish that the next Animal Crossing game has a option where both the
mayor and villager can decide together which spot the villager should use for his/her house before
moving into the town. Like the villager comes to the town hall, make there first a suggestion for a
spot he/she wants to move in and you (the mayor) decide if it's ok or not. If not, you make then a
suggestion. I mean sure, it can take a few minutes till everything is setup, but if you can prevent
any "future drama" with this, why not?
To come back to the actual topic: For me it's a win/lose-situation. A villager put his/her house on a
spot you don't like and you can't change it anymore: Villager wins, mayor lose. You laid out patterns
on a particular spot and a villager can't place his/her house there because of that: Villager lose, mayor
wins. Also, the villager should have a plan b: Make sure there is a alternative spot you can use. So if
a villager want to move in but can't move to the spot he/she wanted, then the villager should have a
alternative place for the house. If not then it's the villager's fault for not thinking about it and has to
take now the place he/she don't like.
(Then again the villagers are just characters controlled by a computer, I don't know if they even
think about it that much, since they also repeat their dialoges after a while or don't care so much
about things you as the player care, so...)