The biggest problem with this game is your characters have a level cap and after you hit that cap you continue to recive cards for that character even tho you cant upgrade them anymore. Opening a chest and 90% of the cards from it are for a max level character so 90% of that chest was worthless. The devs should make it so you dont get cards for max level characters or allow you to sell excess cards for in game currency or trade/exchange them for other character cards in the shop