Keeping track of beacons that are traded/ashed in a mall or city is always an on-going process. DaOne is amazing 
. He is much better at it than I am.
I made a suggestion to add beacon types that would help players build the city/trading area that they’ve envisioned: Different beacon industry/zone types I believe this would help with griefing as it would prevent a player from connecting too many plots/beacons within one zone. I guess they wouldn’t add this to the free MMO space though.