I don't understand why everything has to be random. Just give us a 100% chance of something good. You realize you are giving a significant probability that players will get 100% crap? I'd prefer fewer drops with 100% chance of troop cards than double the number and only 50% chance. For the losers who get 0 cards, it's not very exciting. It shouldn't be random...let everyone enjoy it!
Everyone should get at least one flamethrower tank. I still haven't got one. I got 0 from the last supply event.
I understand the business model of random chests for money, but that shouldn't apply for FREE GIFTS! Give everyone something good FFS. It's supposed to be a gift. Getting coal in your stocking is not fun.