Houses were useless in Oblivion apart from storing things. You didn't even need to sleep because waiting gave you health and you could pay 10 gold for a room at an inn or find a free bed. They should make more things to do with houses.
I agree with this, having a house you open some sort of game play element if if just a simple one. In Oblivion I would see farms or wineries, and think it would be cool to own a house that produced things and thereby added to you wealth.
I don't want a whole game about running a house, I just want the concept that if you buy a farm it earns you some money. If I own a house next to a mill it makes me more money then a farm. If I own a house with a vineyard & winery I earn even more money. If I enter 'the office' in the house I can see "my books" that show how much I'm earning. Just some basic activities on some properties that show some economic advantages as well.
But houses could do other things too. It would be nice if it were easier to show off items in them. It would be nice if owning a home in at own could increase you status in a town or even makes towns people trust you more, give you better prices, or gossip with you. The opposite could be true as well if you won a house in a town maybe towns people in other towns would trust you less if they don't like that town...and a mission could be about making peace between those two towns.
Owning a home should matter, owning homes in certain places should mean something to NPCs, and owning homes that produce things should be an economic advantageous.