4 Seasons to add another layer to call of war

This concept is quite simple there is 4 seasons (winter,spring, summer, and fall) which would change over every couple days (5? 8?). In certain seasons it might add speed advantages/disadvantages to certain units on certain terrains[there could even be new units (ie. icebreaker ships) that were very powerful in a season]. also certain seasons would improve productivity of certain resources or make it harder/easier to steal, espionage, or sabotage.

I can foresee some newer players seeing this as a hinderance to the game and other more experienced players (such as myself) really loving it, thus it would have to be optional when making the game[maybe only be in gold games?].