sorry, how is the current MP camera a weakness? some water colour some have been getting?
I can't think of anything in the foreseeable future to upgrade the mavic...aside from maybe more OA sensors are the back and side.
The camera lacks sharpness (and thats without QC issues making it even worse). Its very noisy even at base ISO. The dynamic range is terrible. As far as video goes the 60mbps bit rate for 4k leaves artefacts and noticeable flickering.
Basically its a 2-3 year old cell phone camera but with the advantage of manual controls.