It amazes me how many people in this discussion seem to think that the entire UA customer base consists of an MR/business traveler dichotomy. The PQD will affect flying behavior and status for more than just runners, particularly US-based international *A flyers. The PQDs are really going to bite for those of us who fly a lot of partner segments, especially to TATL destinations not served directly by UA metal, but on itineraries that may involve at least one UA flight.
I am still waiting for someone to post their PQD breakdown from a non-016 ticket that involved a TATL flight on UA metal followed by connecting flights on other carriers.