Have a spotlight or movable light source
This might not be possible, but it would be nice to have a light source to illuminate areas.
For example in the space environment, the table with games on it (outside, left) is too dark to read cartridges easily. Being able to add a lamp that actually cast light would solve this.
This would really help for the edges of the Home environment when you aren't using the beach/pirate theme. It is pretty dark on the balcony!!
Christian Knutsson commented
Agreed. I thought the Table Lamp item would do this, but it turns out it doesn't actually cast a light in the scene, or at least it's not very powerful.
I realize movable light sources with dynamic shadows is a pretty expensive thing if not limited, but having just a couple of these would be awesome.