Love the fixture, and ceiling paint! In 5' of depth, you probably just want to put some artwork element opposite the front door. Maybe stick with canvas that is unframed so it can't be damaged. A series that leads you down the hall into the home would work well also - Where I see some knobs and leashes hanging behind the door is the place to put key hanger. Maybe try to hang small 1/2 curved front shelves with a big fat pretty corbel under the sidelights themselves, so you have at least a little horizontal surface here. You can add hooks under the far shelf on the other side of the corbel to hide keys.