I think there would be benefit in how to set up the entire scene for lighting, i.e. how things like background color, environment settings, Ambient Occlusion affect the scene. I think we often get thrown into creating a scene that isn’t fully enclosed by walls or a roof and scene setup can be a factor in final renders that look really good.
Architectural lighting seems relevant, with multiple light sources, such as lamps, overhead lighting, supplemental lighting like TV or computer screens, as well as sunlight.
I’d also like to see some examples of doing really dramatic lighting, i.e., how do you effectively light the Batcave and still make out detail while not having to squint, or how do you light a wizard’s office using only the light coming from the fire and a few candles.