Uh, not everyone uses Crestron and your first comment ignores the original problem- the control system doesn't know the state of a device that doesn't have discrete power commands, so other systems won't be able to use this workaround.
Do you really think a person with a cable box and a TV will pay for this level of automation?
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."
