It would be a nice feature to have auctions where you can purchase/bid on either wrecks or used tanks for a higher price, it gets really frustrating when you're going through tank extraction contract after tank extraction contract trying to collect one of every vehicle only to waste your time finding the same vehicles you already have over and over again.

I've just spent 3 hours looking for a Maus, Panzer II, Little Willie, or even a Vickers only to come up with several KV's, Panzer III & IV's, T-34's, M-10's, and a Panther.

Or at the very least have an option to purchase a contract guaranteeing the tank type.