how about getting TO the shots you want??? finding something interesting on google earth and then driving to within a couple miles of the thing to see... get out the mavic, and using the map to help navigate to the destination.... will assist you in getting the shot.....
and should something happen to your camera, only using the map, can get you anywhere but RTH.
From 400 feet one can see a couple of miles to find the area of interest. Or one could have used Litchi to fly right to that spot.
Of course since we all only fly LOS what help is a map?
Without the camera working the only place i would want to get to is home and you can do that easily without the map or the RTH button.
I like a map when available or convenient but don't let the lack of one keep me from flying or getting the shots I desire.