With his permission I re-rigged for Blender 2.9+ with Rigify the facial is not very well weighted but it's usable.Full IK/FK blending on arms and legs and hybrid IK/FK systems for torso and head.
Snappable IK knees and elbows, with optional FK forearm.
Bendy controls to add arcs to arms/legs.
Local and Parent space switching for various body parts.