I may agree on some of your assumptions, yet I think they are to rigid to describe practice in a useful way. Natural man is not opposed to God's law, but merely has the choice to be opposed to it and a tendency to disobey, not to mention that humans tend not to be consistent over time- that is where the true need for discipline stems from. Hence a king may be elected by people seeking discipline and justice. Stanislaus de Scarbimiria wrote: 'a commonwealth is ruled well only if it's laws obey God's will as a state belongs to God only when it is guided by truth- that truth being love of one's neighbour and it's rules- justice an equality.' God's will for the human is freedom as well as obedience as without freedom to rebel obedience is, as you wrote, tyranny.