Great post as always Kevin. One of the ways I look at it is that it's basically impossible to solve the problem of "How do you know someone on the internet is real?" so effectively what we do is we say that someone's "realness" is proportionate to their stake. You prove your identity by acquiring stake. Of course, you can still acquire other accounts, but again they only influence anything if they have stake. If they have enough stake, in the eyes of the Steem Blockchain that account is real too. I do think there will be interesting opportunities with SMTs to introduce different types of identity verification measures that enable different schemes. If one can develop an oracle system which guarantees that one real individual is associated with only one account, you could alter the distribution mechanism and take into account that information. But IMO, there will always have to be a stake-weighted upvote/downvote system in place for the cryptoeconomics to work, one just might be able to alter the parameters based on additional information.