Agreed with all on the Third Act - have said many times, including this thread, how QoS is one of the few Bond that mastered the notion of pacing, and maybe it’s down to the fact that Greene’s plan is so lame…
QoS is one of the few Bonds where the villain’s plan really isn’t that important, so therefore the film has to find other ways to “resolve” itself - in QoS’ case it’s Bond’s growth or Camille’s situation. Compare with the standard Bond where the resolution of the villain’s plan is what carries the 3rd act, well, let me say this -after 50 years, it’s not like Bond ISNT going to foil the masterplan, and therefore the suspense (and by extension the pacing) is robbed somewhat.
Compare with QoS where the scheme is of little consequence. Instead the climax is carried by Camille and her fate, or Bond and his decision how/if to kill Greene and because the outcomes of both of those are unknown, well, the 3rd act carries a greater sense of momentum than the standard “scheme” Bond where the resolution rises and falls on the standard of the action and the action alone.
Greene’s scheme doesn’t even rise to the level of a MacGuffin, inconsequential as it is. I’d argue that in a strange way it’s that that makes QoS different, and by extension helps alleviate some necessary plot resolutions that weigh down other films in the series.