While there is definitely useful commentary below that will guide bureaucrats in closing requests for bureaucratship, it is my opinion that there is no firm consensus one way or the other about the appropriate threshold. While "80%" would appear to be the front runner at a glance and by the numbers, one still has to account for those who support a higher threshold but did not specifically oppose 80%. It is also important to point out that this RFC itself was trafficked by substantially fewer editors than a typical RfB; and even without making adjustments, 80% was still only supported by 75% of those choosing to signing next to a # mark beneath it.
Given that requests are so few and far between, further discussion on this in the near term would probably not be a worthwhile use of time. And really - if the community really wants to make it easier for folks to make it through RfB, they should just go easier on the candidates... Other bureaucrats should feel free to make further closing comments beneath mine. –xenotalk 02:35, 21 September 2011 (UTC)