All Blizzard Territories should have a Round-Replenishing Army Value of like (15) Armies. And, it replenishes back to (15) Armies, at the beginning of each round,. No matter how many opponents attack it, a long as it has not been defeated, it goes back to (15) Armies. So, it is DIFFICULT to pass through a Blizzard Territory, but Not IMPOSSIBLE!
What do you think?
BTW, I think the Blizzard idea was GREAT!! I've been playing "Risk" since back BEFORE pc's!!