For starters, Nokia Map is not integrated with Nokia Drive, i mean, they act as 2 totally seperate applications, unlike its Symbian version, you cannot search for a place and navigate to it from within the Map app, you'll have to go launch the Nokia Drive app and find the place there in order to navigate to it. EPIC FAIL!
secondly, the Nokia Drive app is stripped of all its features that made it the best mobile voice-over nav app, features like live traffic update, route selection, saved locations, over the speed limit alerts and more, at the end it is just an app that takes you from point A to point B, and thats it! Fix it guys, come on!
then there's Bing maps, though i prefer this to Nokia's own Map app, because it has a larger database of places than Nokia Maps does, but it also isn't integrated with Nokia Drive. Bummer!
The Nokia Map Apps are one of the main reasons symbian is still kicking, i believe it should be a major selling point if Lumia is to succeed in the US, i have already gotten complaints from symbian users who switched from their symbian phones to get the newly released Lumia 710 and they are not happy with what Nokia offers in terms of navigation.
Light at the end of this tunnel:
Elop in an interview with Pocketlint said they are working on merging Bing's map service with Nokia Maps.
Elop was quoted as saying ""Part of the relationship we established with Microsoft is that we are clearly placing a bet on the Windows Phone platform. [In return] they are placing a bet on our location-based platform: mapping, navigation and so forth,".
So Nokia will be taking full control of navigation on windows phones, the huge advantage of this is that Nokia Maps will now have a larger database of locations and will be fully integrated into the windows phone OS. NICE!
In the meantime, we'll have to make do with what they are giving us right now, i just hope they fix these problems before Lumia 900 launch, let's face it, the first people who are going to buy the Lumia 900 are us nokia lovers/symbian users and we expect nothing short of the experiences we enjoyed from our Symbian devices!
FUN FACT: if you are listening to music on an android phone while using its google voice-over navigation, the voice-over and the music play at the same audio level making it difficult to hear your directions as the music plays over it, while on a Nokia device, the music automatically dies down whenever you get voice-over directions so you hear them clearly.