Ask HN: How does HN need to change to prevent its quality members from leaving?(quora.com)

http://www.quora.com/How-does-Hacker-News-need-to-change-in-order-to-incentivize-high-quality-content-and-disincentivize-mean-and-or-stupid-comments-which-tend-to-get-mass-upvoted-such-that-its-quality-members-stop-leaving-the-community