Extended evaluation habrapostov

After reading the topic as " Need to close the registration on Habré? "
Actually, the idea: to make such an assessment system , which provides:
an increase in the post / comment rating, simply because the person spoke well, reasonably, in accordance with the rules
expression of consent with the opinion of the author
expression of disagreement with the opinion of the author
lowering the post / comment rating, for example, for non-compliance with the rules or habraetiket
At the same time, only the pros and cons of items 1 and 4 will significantly affect habrasil, while items 2 and 3 will be the subjective opinion of people and affect habrasil only in the case of, for example, a large number of people agreeing with this post / comment. With such a system, it is possible that all people, regardless of karma, can express their subjective agreement, but to indicate an “objective” evaluation of the post, one can raise the “threshold” of karma.
What do you think about the possibility of such a system?