Weath (stake) surely measures someone’s ability to invest in the platform and have say. Plus your idea would allow people like nog with 5000+ accounts and like 500hp to completely control the entire platform.
What you are proposing would be so maliciously abused the place will be a zoo.
Good but then don't expect from the rest of the mortals to downvote any account above their HP. This is a structural problem and will keep like this while the HP of an user is the measure to judge if something is worth to be downvoted or not.