I'd like the Star Rating system back.
You have made interesting comparisons. However, I feel that to boo a child of age ten who is not as creative as a teen or an adult is ludricrous. How does booing that kid help his creativity to grow? Levels that suck to you might be a masterpiece to a child. Encouragement creates growth. Negativity hinders it.
They should give us the option to allow yays, boos, or both.