more detailed nav map

[Foxx]

Why isn't the map of HWYs more detailed? Look at Lexus or MB, when you pass an exit on HWY/FWY, it give you the exit# and if there's a station, bank, etc.
Our map id barely showing there's an exit.
Also, why can't I see the map on the left screen and my SAT or iPod music on the right screen? I can only have the option of onboard computer, trip/destination and another 3D map, I would pref to see what's playing than another map.
Is there an update/upgrade available?
I have '09 E70, fully loaded.
Thx all!