I'm just evaluating some panels for asterisk. FOP2 looks quite interesting so far.
The requested notes field sounds exactly like the feature I am looking for.
Let me say it in my words:
On incoming calls I would like to see a pop-up (like the one which is already there). Fields should be name, number and some custom notes. The possibility to edit and save this information right in the pop-up would be perfect.
Rgs,
schogge