>Gnuite
First, I have to say "bravo" for the port. I love the automatic retrievial of maps. I think I'll be a very very very useful app for the 770!
Thank you very much again!

Before discussing about extensions that could improve the usability of gpsdrive (via plugins written in python for example) let me give youmy impressions.
First there are a few wrong displays: elements like EPE near the satellite map are unreadable, some text are overidden by another text, parameter panels have difficulties to display all the information clearly.
Second, gpsdrive for the 770 seems to have some difficulties to take into account the acquisition status. I kept an eye over the acquisition flag ('A' or 'V') while running gpsdrive and this one finally accept the data far after these one were considered ok. During these comparisons the number of satellite seen were over 7.
When, at end, gpsdrive accepts to start the track it often stops acquiring a few minutes after.

Third, a few suggestions:
a plugin system for calculations and/or placing elements onto the maps,
an offline system,
a total course calculus.

db