You have a couple of good questions that deserve answers. For now I answer in short since I plan to create and publish some post around the various topics.

would such proposal not attempt to implement centralized control on a decentralized platform?

Counter question: The rules implemented on the blockchain itself, eg the way rewards are distributed, the way vote can be given to posts and comments, the features implemented in the Steemit UI, the features available to 3rd parties to use. Aren't this all centralised rules applicable to all users? Do your realise these rules are defined by a single commercial company, Steemit INC? Do you realise these rules can be influenced by the witnesses of which we have less than 100 individuals? Please realise not all rules can be fitted in technology. Please realise that when anarchy is the leading model, with every individual having rights but 'rules' how to treat each other, no community can be created, especially not one where money is involved. The nature of humans is to think of its own before thinking of others. When more and more individuals in a community think of themselves, will lead to even more people thinking of themselves, even those who want to do good to others, will stop doing this when too many people are only taking care about themselves, leaving only those (small group) of idealist. I've seen various projects with an anarchist philosophy that ended up in total chaos, and ended up bankruptcy, from living communities to music festivals.

Who is to say that such committee could not be overtaken by special interests.

That is where community voting comes into play. Anybody in the community is allowed to propose changes to the community, for which the community is requested or even demanded to vote for a proposal. Any 'centralised' institution shall be 100% transparent, and shall be reviewed by the community on everything what they do.

Anon flagging would be a no-go. We should be able to face our accuser.

In principle I agree, but what we she at Steemit is that many users do not flag, even if they want to. One of the key reasons: When you flag someone, even when you think it it is for good reasons and you explain this to the author of the post/comment you flag, generally the author gets mad and start flagging the one who flagged. Question: Dont you think that when each individual is judge and executioner, this will in the end lead to chaos and chaos will let everything fall apart? Before we had societies (small or large) we had the concept of anarchy; In those times we also had the concept of no rules and no respect for each other and a human life was worth nothing at all, since everybody had to chance to kill someone without anybody or anything to stop such individual. Civilisation started when we introduced rules to the society. No centralised rules, means no rules, means total chaos, means destruction of societies. There is maybe a level of society rules that we need to have and what we have today in our societies, meaning we may have too many rules today in our societies, but to me it is way too simple to say that we dont need community rules for any community to be able to survive.

Self vote? Let them who do it do what they want with their SP. No one needs to follow them/engage with them. If no one else curates them - would the outcome not eventually be a +/- zero for them, bar the interest payment? If they don't contribute to the community - don't engage.

The reality shows that individuals still vote for those that abuse the community. It is too simple to say: when nobody votes and engage with those who abuse the community, they will not gain anymore. Why do you think mafia organisations started to rule more and more in the world? Because structure in criminal activities is much more lucrative than no structure! And why do you think more and more criminal organisation are bringing whatever they did in the underworld to the 'real' world, investing in real estate and so on? To be able to move all the money they make in the underworld into the world that provides all the products and services they want to use and consume.

Total Anarchy: No rules, No centralised Institutions, Everybody judge and executioner. I would LOVE to see answers that works in practise on HOW to create and keep a community without any rules, and I mean literally NO RULES whatsoever (and keep in mind, every de-centralised platform has centralised rules, Steemit has many centralised rules either in control by Steemit Inc, or by the witnesses). I've been talking with anarchist throughout my life as well as here in Steemit, and I can tell you, I have never seen practical answers to HOW to keep a community alive when NO RULES applied and everybody is judge and executioner. As a matter of fact; I usually get questions if I like current implemented societies and rules! And when I express that current societies and implementations are not leading in how I look at things, and I again ask the questions how a community can be kinda stable and stay active without any rule, I've not seen an anarchist I spoke with to continue the discussions. To me this is simple due to the fact they cannot come up with any answer that will work in practise. When you have solutions, I would love to hear them!