Priority in trayicon tooltip; tooltip for roster icon; "last presence" time in tooltip
It would be helpful to add the priority to the tooltip for the trayicon. In fact, it would be handy to have the full details, same as the tooltip for a regular contact does but for onesself.
This same tooltip should also be used on the "Account name" icon, which currently has no tooltip.
Finally, it would be nice to display the last time presence was received from a contact in the tooltip for that contact