If it's worth saying, but not worth its own post, then it goes here.
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That seems like a thing that depends on how it's used more than how it works. If The People Of Less Wrong want a more conversational feel on LW2 then I expect it will happen.
(Though I think you're right that the LW2 powers-that-be want it somewhat further along the chat-to-publishing axis.)
We actually have plans for a more chat-like section of the site, though we haven't yet fully converged on an implementation. Here is the relevant section from the LessWrong 2 strategy doc: