In his excellent analysis of Caesar's life, Billows expertly eliminates the "noise" that often hides the pertinent facts about Caesar. He clearly shows that Caesar was a life-long "popularis," i.e., he supported the goals of Marius and Cinna to give the people of Rome more power and protection, and remove absolute power from a few ruling families, the "optimates.". Billows precisely states and lucidly supports his thesis that Caesar wanted political, social, economic, legal, and of course, calendrical reforms. Caesar was not alone in this. Many levels of society supported him: the soldiers, the provincials, the working class, and the poor. It was the "optimates'" desire to hang on to absolute power and to violently put down any challenge to their power that led to the fall of the Republic, not Caesar. Their treatment of Caesar was simply the final step in a hundred-year march to the destruction of the Republic. Their refusal to recognize that the empire needed to change in order to survive doomed them and the old Republic.
In case you're wondering: I have read hundreds of texts about ancient Rome and Caesar, including primary sources, and have a Masters Degree in History.