Presently when you change the lighting level every floor is affected. It would be nice to have the lighting for each floor separate. I like my main room, the ground floor, to be well lit. But it's a bit too bright for upstairs, which I decorated as a bedroom.

Also it would be nice to be able to move the light fixtures because having partitions close to or on them does funny things to the lighting. Lighting can clip through the partition even if it's not touching it. Never mind how odd it looks to have a wall so close to a light.