I don&#x27;t think this is a weird idea.  In fact, I really like this idea.  It seems like a rating agency could be given a &quot;score&quot; based on the historical accuracy of their measurements, since although ongoing books are business secrets I would imagine you could get SOME proxy at least for examining the veracity of the ratings in hindsight.  It could be done with very little overhead, and would be a first step in some small sort of accountability, at least, if only an accountability to the data.<p>Could anyone with an actual familiarity with this domain say if something like this exists, or if there&#x27;s sufficient audit data for it to exist?