Again, that's why likes + simple ratings make sense, to offer 2 different filters.
Personally, i've arrived at the opinion that the rating should not be optional from the artist's side, but from the reviewer's.
The ratings, much more than the likes (due to the hype/critical mass issue), should be used as a rough means of filtering. That's the whole point innit? Just allowing that for some mixes seems to split up things unnecessarily. Talk about "bifurcation".
And yes, mandatory reviews coupled with ratings make a lot of sense to me. So when mixers who hate ratings get rated, they atleast get something with it they probably enjoy, a review.
Mindwanderer: yeah the psychometric thingumajick is an interesting topic. Just briefly, what'd be your fav?
To me it's 5 stars/shoes/golden dildos all the way. It's just very simple and a rating standard for anything art related for good reason. For that purpose, low res ends up being more imo.