Really glad to hear, finally, there's some hope we are getting rid of that filesystem approach for maps. Go, go, do whatever you need to completely remove it and replace with something better: achieving the possibility to move a single file rather than gazillions of tiny files back and forth the card would be super-great! Really it would be a nice boost to the usability of the software, and do what you need to gain best performance, including totally getting rid of backward compatibility.

On 770, I think you should give the user the possibility of turning on/off those eyecandies (antialias, transparency, rotation, perspective) as I suspect they could reduce performance. And I must say the route calculation web service often doesn't respond, so it would be wise implementing that in the software (even if it takes hours to give a response).

Finally, the name: what about "maemaps"? Try searching it with Google, you can see there are 0 occurrencies for it! But I understand you need a "platform independent" name, so what about "2ndPilot"?