In Napoleonic Wars all maps we have also have a set sort of weather, unless it was time of day or rain. I think it would be cool to have maps that have different types of seasons, or a gradually changing sort of thing. On top of that what I would like ever more than changing seasonal maps is gear that is worn during certain types of weather. Such as overcoats in rain, and snow and things of the sort. Not sure if its possible but hey I think it'd be cool.