That's an interesting idea, and I can see some value in it. The difficulty I see with this idea is that these are rather subjective criteria. Any feedback mechanism needs several features:

• it must be rapid -- the sooner you learn from an action, the more it will stick
• it must be consistent -- the easier it is to see a pattern, the easier it is to understand it
• it must be representative of the whole community
• it must be simple and fast to provide feedback, so enough people will provide feedback

The current system is a bit soft under #2, but fares pretty well overall. Any additions to the feedback system need to take them into account.