Actually, we can just write it in that if it starts lagging up the server, then it shouldn't be allowed. If its not, then if people want beacons, give them beacons. Ill add a minor note.
Actually dark it could have been defined under "Obsessively beaconing a barricading group." under the Admin Restricted Usage section. I just fine tuned it to if it starts lagging the server then only one per cade. But "obsessively beaconing" can be interpreted in different ways.