I think it would be super useful to have a checkbox/slider within the 'Enscape Objects' window that would allow you to change the way that specific light objects interact with diffuse/specular/reflections separately.
It's a bit annoying to see reflections of fill lights or spheres just floating in mid air..
Also can someone please explain why some light reflections seem to bypass geometry? But then that same light won't exist if the camera doesn't have a direct line of sight to it.
I've attached a few diagrams to help illustrate the issue.