I guess we will agree to disagree. The use of empties makes your rigs breakable. The simple act of clearing the transforms on the empties resets the empty to ground zero with no way to undo the damage. A bone has a rest position that can’t be misused in this way if proper care is taken when making a rig. I see your point with efficiency, but I can’t agree that efficiency trumps reliability and breakability. Thanks for your time.