On a large job, lets say a 100 acre square area, the dimensions of the square are approx 2,000 ft. It is very likely you could hit the minimum battery level half way into the row, at 1,000 ft. Yet on the drone deploy app, it won't return to where it left off.
You'll have to re-shoot the entire 1,000 feet of half the row because the DD app will only restart at the beginning of the row it left off. That's wasted time and battery juice.
Why not save the GPS coordinates of the last two photos taken in the row, and then return the the GPS location of the photo taken before the last photo to ensure you don't have a gap in your overlap due to the GPS inaccuracy and thereby not have to reshoot the entire 1,000 feet all over again?