The Pirate Party (Germany) have launched LiquidFeedback as an online system for discussing and voting on proposals. Looks like a nice initiative.... and while not like the new CS ideas page - http://ideas.couchsurfing.org/forums/149865-improving-requests-and-travel-plan-posts
...there might be room on BW for a similar initiatives (outside the forums).
http://liquidfeedback.org/2011/09/11/core-2-0-0_public-alpha-test-of-new-api_call-for-applications/
http://liquidfeedback.org/
Michael