Don't forget that you can also put the Mavic with remote and 2 extra batteries (3 total) in the Spark bag. I do that all the time. So the carry size is essentially the same, but more fly time.The MP case left, and the Spark FM bag on right. Pretty much a close package size, just different shape.
I wish they had made a pocket with a zipper or flap big enough for the iPad mini. The back of the bag would’ve been the perfect spot.