If only we had a java expert that could code highclouds and highcloudnoise types to be specified in the .mis file or even random or depending on weather type... Unfortunately because they are specified in the load.ini, they can only be changed after a game re-start.
You don't really need a game restart. Get back to the main board in Il2, use the Windows key to get back to your desktop, then open the map folder. Change the load.ini file to your liking, save, then go back into Il2.
Or, quicker, have load.ini file
s with each type of cloud. Name them "load1.ini" "load2.ini" etc then simply change the file name to "load.ini" to activate the clouds you want.
One last option would be to have a bunch of maps from the original that each have different clouds. Example: The original map is called "Smolensk" and the new ones would be named "Smolensk1"; "Smolensk2"; etc. In the mission file, before starting the game, change the "MAP" line at the top of the .mis file. The greatest drawback with this option is the amount of room needed for all the maps!
Of course your ideas of either randomness or changing the .mis file are good. An expansion of this idea might be the ability to change it through the "Configure" tab in 4.12.2.
Bob