Add function to dislike comments and make like and dislike separate counters. Do whatever you want with account counters. Make liking/disliking anonymous so people that agree/disagree have to comment and say what's on their mind if they want others to know their stance. Also, allow not logged in people to vote and hide counters for them till they vote so they don't zerg. This should be very easy to do compared to the feedback system you are working on and would revive Feedback & Gameplay section a bit.