I like the idea - I've been toying on and off with similar thoughts, it appears you're more advanced in your thinking than I.<p>However, you say:<p><pre><code>  &#62; I think HN community is composed of mostly independent thinkers ...
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That's certainly been true, and is probably still mostly true, but the evidence suggests it's becoming less true as HN becomes more popular and well-known.  I think that's inevitable, and is recognised by PG, which is why he's testing and experimenting with the way votes and karma work.<p>I think you need to plan for the quality and subjects to drift significantly in the future, starting now.  If you can solve (or anticipate) that, you may have a winner.