>>102315230But troll anon has a point or two.
Smooth animation of William's style is not necessarily a reflection of skill in and of itself. It's work and effort. There are plenty of fine qualities to this that I can point to and say "that's why Williams is a master animator", but having more inbetweens isn't one of them.
Animation is largely a commercial art, so practicality is a concern. Theories aren't worth their salt if it means the animation cannot be produced in a sensible timetable or that the bulk of work has to be shipped off overseas, but that's exactly the problem western animation has right now, and Thief and the Cobbler is a poster child of it. Our imbalanced priorities result in either productions that are non-viable, or designs that are far too simplified and abstract, because of this devotion to frame rates that doesn't even look good half the time.