More recent (last week) Hanson writing on contrarianism: http://www.overcomingbias.com/2014/03/prefer-contrarian-questions-vs-answers.html He takes a tack similar to your "value contrarianism" - you and he think that beliefs on these topics (values for you, important topics for him) are less likely for the consensus (whichever one you're contrary-ing) to be correct.

I wonder if some topics, especially far-mode ones, don't have truth, or truth is less important.to actions. Those topics would be the ones to choose for contrarian signaling.