Tab subdivisions

Being able to see all players in tab is great but it is also sometimes not ideal as I cannot see who I'm chatting with in /w and I don't know if another person is in my world when doing commands that require both people to be in the same world. I think maybe everyone can be in tab but there can be dividers in tab that separate who is in different worlds so you can see all players and also who is in your world and what world others are in.

 

If that is a thing that would be helpful but right now it says "You don't have permission to execute this command!" when I type /glist