I too would like to have the ability to display the current speed near the posted speed limit. In fact this would be a welcome spin off from a broader request, that is to have a more customise-able view screen.
I would very much like to have the ability to switch between 2D and 3D display; the current two-click route is distracting whilst driving, which is when it is needed most.
Finally the ability to group favourites would de-clutter the Favourites folder, and make it easier to use.
I hope you find these suggestions useful. Thank you, & regards.