A couple of years ago, someone (Christian Meier?) suggested that Caesar might have deliberately allowed the conspirators to murder him.
While, certainly, this hypothesis isn’t beyond reason -- by 44 BC Caesar was a very sick, very arrogant man and may have seen suicide-by-Senate as the only Roman way out -- we are second-guessing an account that’s survived 2000 years of scrutiny.
For me, Cato’s end was a bit of a let down. Future stoics would accord the man near messianic significance, so much so in fact, that Dante (c.1300) places him at the entrance to Purgatory and not in Hell with the other pagans.
Other interesting points: 1) Caesar was a notorious womanizer, in fact, he probably had a tryst with Cato’s wife. 2) Roman sources, though suspect here, relate that Antony was habitually very drunk, to the point that he’d actually loose control of his bodily functions.
Rome is an incredible series and much better than anything I’ve seen set in the period.