Excellent article!  Just one question:  as clearly stated in the beginning of the article, this technique should be used after all "commonly used" techniques have been applied.  Can we turn this around?  I mean, start with this approach and move on to other more "common" diagnostics?.  I know this is focused mainly on object/traffic issues, but just how common these issues are?  Maybe by fixing problems identified by applying this method, other problems are solved also?  Man... it was more than one question, wasn't it?