This suggestion most likely requires a lot of coding, but I'm just lumping ideas together.
Perhaps in place of the Quick Feedback we can have another, larger comment box that pops up by clicking a "Comment" button where the Quick Feedback box is now.[1] This will only allow for one comment per game that will prevent spam[2] with an edit function in case the game developer uploads a new version of the game.[?] When the page loads, your comment will be the first one on the page when you go to that page so you know that you posted a comment on the game and this also eliminates the need to search for your comment.[3] Comments from other users will be listed by date as it is right now, so your comment will not be bumped to the top but stay where it is with a small line indicating when it was last edited along with the date of the original post. Additionally, the overall rating a game would also be lumped into this system to prevent the more frivolous of votings[4]. Then, perhaps, each user's ratings could be shown along with their comments.
Either no one reads it clear enough or no one understands.
Comment plus rating in a pop-up window. Write your comment, rate the game. Submit. Go back and edit comment/rating whenever for whatever reason, such as if a new version of the game is uploaded.