Object settings instance-based rather than global

I just want to clarify - objects placed on the Environment or Environment Details Layer use the lighting from the floor and walls. This works great for carpets and other "ground or wall hugging" details - but may look odd for something like crates (and lighting won't match objects on the Props layer). So this does not obviate the need for per-instance settings. However if it works in the short-term, than that's great.

Also - I would not suggest drawing parts of rooms "off the map" like in the screenshot, they will be cut-off when rendering or printing. There are occasions where this is desired but usually will produce unexpected results.