The money we pay for buying the game, that is in fact their reward. Of course, there is not only critics for this game. After all, if there were we wouldn't be playing it, now would we? It's just that the game can be a lot more with the proper feedback.
I don't know if there are devs reading this forum, but if they do, this is the place where they get their feedback from. This and e-mails from players (send e-mails!