I think the great people over at Bethesda should make more things to do in your house. Things like, gambling, having friends over ( being able to have anybody you persuaded into liking you come over. Every NPC should have this option. Having 'close' friends come over too. *wink* wink*. Having more than one person over too would be great. Everyone partaking in conversation, and having hearty amounts of mead.
I could go on forever....
Tell me your ideas.