The problem is that every time people have deviated from the Disney playbook in hand-drawn animation, they've done so with staff that are nowhere near Disney-level talent or Disney-level budgets.
Brad BirdIf you move something 10 pounds through space and then stop suddenly, there's a little overshoot. When you transfer weight from one leg to another, there's a certain way that it happens.
Brad BirdEven in hand drawn animation, humans are widely considered to be the most difficult to execute, because everybody has a feeling for how they move.
Brad Bird