How about an option to perform an action if the user simply hovers the mouse over the Tray Icon for an extended period of time? That’s to say longer than it takes to simply display the tooltip. It could have the same choices as click and double click. I had a display glich that seem to bring the WW window (it was already open) to the front just now without clicking, but I can’t recreate it and I thought that might be a nice feature.
http://www.p2pforum.it/forum/images/smilies/showpic2ck.gif