GPC cases…
Mmmm…
Note the battery cutouts on the right hand side:
That section is removable, for those who have the charging hub:
A sheet telling you what goes in each compartment, and the two recesses under the drone and under the controller:
Snug as a bug and now properly protected:
Oh, heads up btw, note the folding charger plug in the above photo. As per usual, the stupid shape UK plug that DJI invented doesn’t fit this case. Folding plug required 
In terms of the footprint, it’s not much bigger than the manbag either:
In both dimensions 
Sorted.