I made a post recently that Less Wrong Lacks Direction that seems very similar to point 3. Less Wrong has moderation, but it doesn't have leadership. There is almost no concerted group action. Everyone has their own ideas of what Less Wrong needs to do next, and they are all different.

I think Why our kind can't co-operate is an excellent article. Whenever you post an idea, you might get a few upvotes, but you'll also get a lot of comments saying that something else is a better idea instead.

The reason why Less Wrong is getting less readers is because Less Wrong has much less content. Either 1) we need someone crazy like Scott Alexander who will solo producing huge amounts of content 2) we need some way to encourage the posting of new content. The ability to create separate sections of Less Wrong would be a great way to increase the amount of content posted. The programming wouldn't even be that hard, the issue is that the moderators still haven't commented on whether they'd turn it on if someone went out and did it.