I realise this will be pretty low priority given almost no one else will have this minor niggle, but I'll request it so it gets added to the list.
I'd like to request a 'Quit' button for the main application.
Currently I have to use the 'To Tray' button, then right-click the app's icon in the tray to Exit. Minor detail most of the time, except sometimes my tray app isn't running, so I then have to kill altbinz's process. The reason I have to go through these two steps instead of just clicking the 'close window' button that Windows draws in the top right corner is that my window manager doesn't draw frames around altbinz, so I have no [X] close button in the top right corner.
If you run a special window manager (not Windows desktop), you may not have any window manager's buttons and frame surrounding altbinz's window. (There are some special window managers for XP, and also this could also apply to anyone using Wine and Linux.) It would be nice to have the ability to quit the app directly.