Economy is garbage, Gaijin should reward more in game currency for a player's performance in matches and reduce the amount of time it takes to research new vehicles.
Also the gameplay itself has a strong bias in favor of Russian / Soviet vehicles. (Buffing Tank armor etc...)
There are a plethora of other issues that make the game feel grindy, unfair and more importantly, un-fun.
Shame on you, Gaijin. You have a one of a kind game that you have slowly over time exploited for your own short term and selfish gains.
The people that love and play this game deserve more respect than you give them and it's obvious you do not respect your fans at all.