There could be some settings for this in the airport editor/SDK so that each airport has it’s own settings with seperate options for Runway, Taxiway and Apron/Ramp snow clearances e.g. Something like this:
- No clearance (as it is now, and is correct for unmaintained small aerodromes/strips)
- Light clearance (less snow thickness/opacity(darker tarmac is visible through the snow, but only slightly) like for small aerodromes that are only occasionally plowed)
- Moderate clearance/streaky effect (like a large airport where it is plowed often but it often snows heavily)

- Good clearance (like at a large international airport where it doesn’t often snow heavily)

That way it could be set to mimic how that specific airport is cleared of snow in real life!
Discovered this SDK request, after posting in this other one: