As it would be nice to have your house where you would want it, I think Runescape handled this situation well, but instead of a house maid you had a portal that had your house in it, but you had your house within a different location of the game, you could teleport to your house and be in that area, for instance, I could be on the other side of the world and teleport to my house, which was at another location in the world and it effectively was an entirely new teleport in of it's own.
However having it in the world would be interesting, however considering we run into the fact of how many people may or may not show back up, how are we to have the houses in the game? Or Perhaps one thing that could happen is player owned territory, where you can make the area yourself and other people can either visit it or have it be set to private/guild only etc etc, that sort of thing.
But regardless of what happens though it'd be an interesting feature to have none the less.