I hear ya!
What I'm askin for prob that eh weather change more than high overcase, partly cloudy.
Having evveftc like rain, mild rain or cloudes that are darker than baby blue would becool. Mind you, i am preally impressed with the effects at present, but I recall many stories where fights were lost in the clouds. The tropics, forexample have really low cloud levels and spontaneous rain fall. I'm sure the war was not on hold during those times.
De-icing - well I wasnt even thinking that, but good point.
and Duperdud!!