Vostok, you're killing your game.
The new attachment system is cool and all, but the bound category is stupid as hell, along with the price in gold to unbind an attachment. The price in gold to upgrade gear is crazy. The price to level up factions / characters / gear slots is crazy. This game is horribly pay to win and it is pushing away players.
Do something about it or you won't have a game to support much longer.
Sidenote - The decision to make all gear tiers equal was an excellent move. Good one, honestly.