I know there seems to have been no progress getting the GPS working for the Sprint 6700, but pages like
http://www.mgmaps.com/doc.php
always make me hope. Apparently mobile Gmaps will use the GPS in your Sprint phone and get map data from Google maps. Sprint doesn't seem too happy about it of course since they allow one to use Sprints GPS without paying Sprint.
http://www.phonenews.com/content/view/2086/9/
I hadn't seen this discussed here and was hoping maybe someone could figure it out for us 6700 users!