PS - @Windmere or anyone - is there any method you can think of to turn a prefab, group or level template into a single scenery object? I want to add wall, houses, lights and the like to the GM palette (and other items), but I can't find a good method... or even just groups of existing scenery objects turned into a single object - for example say a table with plates and food on it or shelves with books.
That would probably require some outside 3D work to merge meshes into one mesh (the shape of the object), I think.