I know you are aware of the issue of multi world servers, or even bungeecord servers causing issues with mixing chunk data. would you consider creating a small plugin for server owners to add to a bukkit based server to just talk to bobby and let it know what world is currently loaded, similar to how emotecraft or vivecraft have plugins to talk to clients, As a server owner, even if I was not using bobby, id be happy to add the plugin to help resolve the issue for my own players

Duplicate of #72

And no, I no longer have any plans to support a solution which relies on the server admin putting in extra work because I don't believe most will care enough for that to be worth it.
Especially because they can basically already do that by just making sure that different worlds don't use the same seed (or when running an old version via ViaVersion, by changing the world id in its config).