The thing that really cripples this game IMO (and killed it for me) is that the tiering is brutal, and entirely unnecessary. Tiers are understandable in a game like World of Tanks, where there are many tanks to include that players might want to play, some are clearly more powerful than others, and you'd never want them in the same battle. But in a game where you literally construct your own vehicles, it's nothing but a detriment. There is absolutely no reason they couldn't do away with tiers altogether, and just have unlocks create more options and more variety instead of more powerful vehicles. This game could have been so good, and instead, is so mediocre.