It would be really cool if villages houses would change overtime for how long they stayed. For example they would get larger, change exterior. But not so it could be as big or look the same as yours.
So your favorite, long time villager could be noticed by others and i guess, be considered 'special'.
Though to make it more reasonable and difficult it wouldn't change like in a few days, you would have to wait awhile, and the more attention/gifts you gave the more would happen.
I don't think the houses should look as extravagant as your own though