Interesting one, we see in reality that a whole list of items determines passenger satisfaction, things you would not think of at first sight maybe: catering (and we are not talking of your average airline catering, but really very specialized on demand catering which should be EAXCTLY as requested, as exotic as you can dream it), the flight schedule (flying on the dates, times, destinations and routes the passenger wants, and they accept no NO), very importantly the service offered by the Flight Attendant (and we are also here not talking about the average airline service offered), the welcome by the Captain at the FBO, the swiftness of going through the FBO, the quality of the lounge in the FBO, the connecting helicopter or limo trip etc. etc. . We rarely if ever get comments on the how the flight was flown itself, but much more on the above-mentioned items! Wonder how Pils will measure those? ;-)