First, I appreciate all you guys and gals do to support the Phish community and make it even more fun with Phish.net. It is a beloved resource.
Second, have you all considered instead of a 1-5 or 1-10 scale where reviewers have to choose a whole number, offering a scale (and choices for reviewers to select) that allows for more nuance within that most commonly hit zone of 3-5? Most simple might be offering these choices: 1, 2, 3, 3.5, 4, 4.5, 5. Lots of different ways you could go at it, but something along these lines would allow careful reviewers a chance to give more measured/nuanced input which may end up with more aggregate ratings more aligned with actual sentiment. Just a thought!