My impression is that the Gateway should UI makes too easy to accitentaly power of devices. For example in the first 5 minutes after I installed Mozilla IoT Gateway at home I managed to power-off my entire garage-lab.
After I added the power-meter which tracks how much power my garage-rack is taking I click it, excpeting to see more information about the device. By now you probably already know what happened, the entire network went down and I had to go outside and restart it manually.
Just clicking on such devices shoul not trigger on/off, some of them are not light switches. We need at least some kind of protection for accidental use.