The Ka-60 at the moment uses both Displays in the Cockpit to show the player the Helicopters attitude. It would be much more useful if the pilot could see a moving map (possibly with markings, just a copy of the M map) on one of them. This would increase situational and tactical awareness of the pilot, since he doesnt have to open the map all the time. Real-Life military helicopters all have a GPS integrated, so it wouldnt make sense for a pilot not to utilize it.
Tl;dr: Use the redundand second MFCD on the Ka-60 for a map with map markings.