I like your "definition" of output  - essentially I think you are saying that your output is equal to the impact you have on those you influence.  Your product then is reflected in the "eyes of the beholder" so to speak.

Has me thinking... Many people in organizations have learned to "play politics" to portray an image to those above them that will bring favorable consequences.  Personal branding or relating to yourself as a product seems to require a more encompassing view of who you are than the traditional top down approach of performance assessment acknowledges.  Will that strategy work in the future or will personal branding trump political saavy as the essential skills to being successful in the organizations of the future?  How might the way we are evaluated change?  Thanks for giving me some food for thought Mike!