Seems fairly likely that we have established the date coding. It could be out by one day though, if 0=1.
For the rest of it, I still like the idea of seeing the serial broken down in to two 7 character strings, as used to be stamped on older models. In this way the serial can readily be broken down in to two sections. The first half being for Model Variant info which is largely common. Second half effectively creates a unique designator for each unit, in an eloquent manner that does not divulge total build quantity.
Row 1 Spot 1 = DJI model No (Base10), because DJI will make more than 9 models. Mavic v3 in 2019 might be “11 so 1 will go here instead of 0.
Row 1 Spot 2 = DJI model No (base10)
Row 1 Spot 3 = a Mavic Characteristic
Row 1 Spot 4 = a Mavic Characteristic
Row 1 Spot 5 = Year D = 2016 E = 2107
Row 1 Spot 6 = Month (Base36)
Row 1 spot 7 = Day (Modified Base36) to exclude letter O due potential confusion with 0. Also we may be off by one day here with dates, if 0 starts appearing in any of the serial numbers at this position.
Row 2 Spot 1 = A variation that has occurred at least twice so far. Characters A 0 1 seen here so not likely Base36.
Row 2 Spot 2 = a Mavic Characteristic
Row 2 Spot 3 = a Mavic Characteristic
Row 2 Spot 4 = a Mavic Characteristic
Row 2 Spot 5 = Build Sequence number (multiplier 2, Base36) - max possible 46665
Row 2 Spot 6 = Build Sequence number (multiplier, Base36) - max possible 1295
Row 2 spot 7 = Build Sequence number (Base36) - max possible 35
More on Row 2 Spot 1. I have seen 2 x letter "A" here in amongst other early builds that all had "0" in here. All others have a "0" here except my most recent unit dated 20 Jan which has a "1" in here. It is feasible that this is the wiring switch, but I doubt it. If the schema I suggest is close to correct, this is the only position that could indicate build variations. All the other positions are either constant so far, or are used to record date and sequence number. So it could be for rear wire twist, bundle type (Flymore etc), or some other obscurity.