I am confused on the issue of using the M350 drone in foul weather since the payloads for the thermal and or other camera payload are only rated to IP44.  So is there plans for DJI to increase the IP rating for at least the thermal cameras so it can be used for search and rescue like the M30T rated camera?  Seems kind of a waste the drone is IP55 while everything else is no higher than IP44.

IP44 is rainproof, so theoretically unless you use it from a submarine everything will be fine.  Then anyway with too much rain I wonder what you hope to see.