You mean like the very visible colored LED ring that already exists on the devices? Though I suspect that most people keep their devices tucked away in a corner

You mean like the very visible colored LED ring that already exists on the devices? Though I suspect that most people keep their devices tucked away in a corner where they are hard to see -- but that's not amazon's fault -- few people would want the devices if they had a bright flashing strobe light visible anywhere the room. A confirmation after every request makes the device a lot less useful, I suspect most people do not want the device to confirm commands before it does them.