I think more important than resurrecting posts from people who have squandered their privileges are we need to allow for better and more convenient browsing of comments, so that we can let the best ones shine.
1) native folding of comments, like reddit. I don't understand why this doesn't exist yet, and is the single more important thing to going through the comment list effectively.
2) better algos for upvoting and downvoting comments and threads entirely. This is something that reddit is absolutely great at, the top comments on reddit are generally the best or funniest, depending on the context. The top comments here are generally the first ones posted, or the ones from people already with high karma, and thus either the fast or the already-karma-advantaged get more karma.
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