Most of your suggestions have been made before, and are probably on some wish list. How do you get any of it done on zero budget is the issue. So the real question is how to get the necessary budget for the site development, not which features should be implemented.
I know nothing of Less Wrong's maintenance approach - it seems to be maintained by a small handful of very busy people - but it would seriously surprise me if this community, disproportionately composed of programmers as it is, couldn't come up with the code to implement any solution the administrators found suitable.
Today's post, Well-Kept Gardens Die By Pacifism was originally published on 21 April 2009. A summary (taken from the LW wiki):
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This post is part of the Rerunning the Sequences series, where we'll be going through Eliezer Yudkowsky's old posts in order so that people who are interested can (re-)read and discuss them. The previous post was The Sin of Underconfidence, and you can use the sequence_reruns tag or rss feed to follow the rest of the series.
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