I think it would be nice if we could have a back door to our house, instead of it being just a piece of wall gone. I'm not saying to load the back yard like you do when you switch locations, but to put in a door that swings open but you can "lock" it.
For example, you let someone into your house, but you don't want them going into your back yard...you lock the door and they just can't go.
Of course, you could lock the door before you get offline too so anyone who has a key to your house cannot go out as well.
Just a thought, because I would like this.