That might work but putting in dependencies for hundreds of systems will take a while.  It’ll be a little tricky since we use OPFS to route around down devices.  Keep in mind our system is about 50% RF links and then 50% devices. A device can have, in our topology, anywhere from one to 5 links to it.  So a defined area would be fine…we could just make everything dependent upon the local router, but on larger sites it’ll be a bit more complex.