Basically, an option to change the way the networks/channels are listed when right clicking the tray icon.
Instead of...
Network
#chan
-
Network
#chan
user
-
etc
Something like, where the '>' represents an item in a submenu
Network > #chan
Network > #chan
> user
Sometimes the right click list can become rather large, i think an option to use sub menus therefore reducing the number of main menu items would be handy.