Our studio hosts a strong QA team that performs thorough review of each asset created. However, there are rarely major issues because of how professionally we approach rigging. We assign hierarchical dependence to each bone, linking them and creating a stable order for movements. As for the scope and way that the bones (and overall model) move, we put a lot of care into setting up transformational values (rotation angles, amplitudes, etc.) that reflect the various situations and movements that the asset can experience.