Interesting. I hadn't really thought of the "what if they had just plunked it hard down first time round" question.
I was wondering the same thing. Do aircraft manufacturers analyze for belly (or nacelle) landings? What range is the coefficient of friction when sliding down the runway compared to fully braked rubber tires? How does the 'landing' distance compare to a normal landing? In this case, because of the aircraft's speed at 'landing', 210 ± knots, and how far over the threshold the plane was when it touched (4000 feet or so if memory serves), would it have stopped before the end of the runway?