Excellent. Here's what I found. I know the NS1 file has the GPS coordinates for each AP, and a ton of other stuff.
Here's what I found:
http://www.stumbler.net/ns1files.html
Along with the coordinates, it also contains the strength, the name, and some other stuff. If it is possible to add the APs to the map in realtime, could they be added as a POI something like a restaurant? The name of the AP, with strength and encryption displayed like the address and phone number?
(By the way, drove home from work tonight, and used the routing feature for the first time. Incredible!)