The current vanish system we have works fine, but there are some things I think that would be cool to be added.
1: Make a command to toggle if you want to join the server vanished
2: Make it so you cant tab a vanished persons name (probably a bungee issue)
3: Make it so if you try to message a vanished person with the bungee message system it says they are offline. (Only whilst the vanished player is in freedom-01)
Anyone can also list additional changes they would like to see in vanish if they wish.
aight bye