GPT5 came up with this and that made me think that if teleporting was a desired feature, such a map would be good for the app itself, so you can click where you want to teleport. But of course that also defeats the purpose of local communities. But people will teleport regardless of the feature being provided, so maybe the app should auto-detect who was ever reachable via BT and maintain these as non-teleporters. "hide teleporters" could then switch off the noise.