I like the idea of a Kuro5hin Wiki; although I'm not exactly a big fan of the Wiki liberal editing policy, that's just my paranoid self talking. I know it works well in certain, programming-oriented, circles.
The problem I see with the idea is that I don't think it solves any of the two issues you mention:
- "Greatest Hits": If anything, I would think a Wiki is the worst possible place to put such a thing.
Of course, you are posting links so the stories themselves are not affected, but having the ability to edit at will makes the list very volatile. The Kuro5hin community is not above moderating comments or stories down based on ideological disagreement, but there is fortunately a balance in disagreements that keeps a single unjust moderation from affecting the final result, and there are systems to reduce the effects even of the abuses that pass through.
I would think it only takes a couple of immature people to make the "Greates Hits" section into "Partisan Articles of the Day", with a day of the week for each political bias: Conservative Christian Day, Communist Day, Liberal Day, American-Centrist Day, Anti-American Day, Neoliberal Day, etc.
The idea of the "Greates Stories" or "Classic" sections would be to expose the best of the best articles/discussions according to the general consensus of Kuro5hin, not to publish the personal favorites of whomever took the trouble of editing the page that day.
- "Welcome Center": would the Wiki be a welcome center to allow newcomers to understand the culture of Kur5hin, or would Kuro5hin be a welcome center to allow newcomers to understand the Wiki?
The blog is, after all, a more familiar genre for the typical new Kuro5hin member than the Wiki, and I would expect the latter to develop its own quirky characteristics if it is going to be of any interest.
The Wiki might be a good ground to collect comments and polish new guides, FAQs or other advice for newbies. And it's a good a place as any to discuss and figure out what to do with the "Classics" idea.
But I think both issues require a more traditional approach for the final solutions.
Freedom is the freedom to say 2+2=4, everything else follows...