I'm not sure I see what you see. Maybe????? Turnbull was more a Brutus than an Imperial presence much to his chagrin. Scomo too was no emperor - he deferred to a 'sky fairy' as some say, when convenient and to the missus when politically expedient.... not!
Got to disagree with your thinking the Abbott was Caligula... far from it from my perspective.. he had good intentions compared to Caligula, and actions - hardly a bloodthirsty tyrant.... I just dont see it.
