Would it be possible, since you will be creating a database file for the upcominmg tags(?), to also store in that database or another all the info about the fonts loaded on the computer ?
For instance, when I open iTunes it doesn't need to rescan my whole library. It's the same with the new "instant search" feature in Outlook 2007.
Could it be possible to add a similar feature to FE ? This would make search and various displays appear faster ...