Not at the top of the list of things to do (just ask the guys who want the pan and zoom), but what would the chances be of expanding how the alerts work to add the option of additionally being alerted when an aircraft is handed off to a certain ARTCC or Tower.
Example. I get an alert when COA1622 departs KIAH, then, I request for FA to alert me when 1622 is handed off to KPDX Approach. This would be cool for people that like to track flights on FA and listen to LiveATC.net at the same time (even though there is a delay).
Just an idea.