Content is mostly banter unless the protocol remains as a way to preserve accountability. But I wouldn't be surprised if Steem takes out content as part of the chain and votes are account-centric instead of being content-centric.
...And I really wonder on how the structute wil be self-sustained.
What do you mean by self-sustained by the way?
That would be a huge change and probably confusing for immature users (includung myself)....