There have been many calls for accountability, and they all seem like a good idea. (including this proposal, of course)
However, I am a tad worried that users who wish to stay anonymous may be treated as less important than those who have credentials which have been verified, etc. I know we can say that users are equal, despite accepting/refusing to do this (optional) verification, but it's a lot like 'optional' RFA questions (which aren't really very optional at all) - at least in my view.
That's only a minor concern however, and I think that this is a good move despite that. Particularly, I'm hoping that something like this could do wonders for public opinion of Wikipedia's reliability and credibility, especially considering recent events. Has a request been filed in the Mediazilla yet?
--Michael Billington