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That's all well and good in theory, but do you have examples of games between two high level players where blizzards promoted this kind of game play?
I liked Cold Tech. For my part, I made extensive use of Jaegers, half-track grenadiers, and other mobile units during blizzards for raiding and capping. One time, our army got smashed in a 2v2, so thoroughly that we were almost certain to lose, but then a blizzard came on while we limped back towards our last VP. Both teams were at about 5 victory points left. The enemy team had just thrown their whole army at the center VP, and hunkered down there. I told my OKW ally to spawn some Jaegers in a house near the top VP. The Jaegers used the blizzard cover to sneak past the enemy units in the way. Then they apped the point. By the time the enemy realized, they didn't have enough time to get through the deep snow and recapture the point, so we won the game (despite having lost almost our entire army in the desperate last battle that just happened).
My ally and I play maybe once a week at most and our ranks have like four or five digits, though. I loved blizzards and Cold Tech but I've never seen a stream of a high level game where blizzards did much more than slow the game down. I got a kick out of running around the map with half-track grenadiers and M3s with infantry, and trying to sneak up on people, but since I've never seen good players focus much of the energy on that, I always attributed it to low level shenanigans. Maybe I'm wrong though.