We should be able to buy furniture and/or wallpaper and floors so our houses do all look the same and so you can personalize it. Even better, if you could design your wallpapers and floors or rugs and make pictures or put already made pictures in your house.
You can design your furniture and/or decorate it yourself. And be able to buy more furniture.
What if you have a mortgage? So you can buy a house and pay it off as you go. Then after that you could expand and pay that off.