I accept that this is a superior voting system to one-person-one-vote. However, for it to succeed, it should not merely be superior, it should also appear superior. The trust the voters put into the system is paramount. And for that to be true, the vast majority of the voters have to understand exactly how it works. Unfortunately, and, yes, I'm a cynic, I don't believe we are close to having a voter base that is capable of understanding, and hence accepting an outcome of such a voting system.
Disclaimer: I'm not a US citizen.