Recently, I've been playing some games, and I try to leave a review for every game I play. Its important to give the devs feedback om their projects, and I try to do this extensively. Something that came to mind is that my reviews aren't public, but only the people who follow me personally can see them. Maybe, there could be a review tag for games, allowing people to see the ratings and reviews publicly. The author has the choice of making them public or not, so there is no pressure.  Maybe dont give a "generally positive/negative" synopsis, just give it a tab and allow the people to take a look if they so wish to see more opinions. 

As someone who tries to give as much feedback as possible, I know comments are available and public,  but I didnt want to overtake a comment section with my huge review. I dont know any other ways to review or leave feedback, as I am relatively new to Itch. Maybe this isnt even worth the effort, but might as well give it a shot. 

(moved to the right category)

It's great that you want to take the time to leave a lengthy review. But you're scarce - most people don't want to do that. The review tabs, if they're created, would mostly be blank.

Also the ratings / review section are currently not in the control of developers and there are no checks and balances. (Anybody can rate / review my game whether they've played it or not - and that happens.) 

Developers can manage the comments. So if someone leaves a helpful comment, we can respond to it, answer questions etc.  If someone leaves a comment that is spam or irrelevant we can delete it.  That's important.