We've talked about some of the key Liberators individually, but what about more generally? What happens to the rest?
Casca and Cimber were already in the east, presumably with other minor assassins; so of them, the ones that don't fall with Cassius will be with Brutus.
And the ones in Italy? Well, we've established that Decimus could get Octavian's public forgiveness of sorts, so I'd say he could survive the wrath of Caesar's would be avengers. I'm guessing some other bit assassins might get the same deal. Cicero, though not one of the killers, will be similarly protected.
Others in Italy might not be so lucky -- Galba, Quintus Ligarius, Basilus and others who were targeted by the triumvarite otl may find themselves targeted by the mob when things in Italy get chaotic. (If so, you can be sure Fulvia will be doing her part to fan the flames.) The targeted conspirators who aren't killed will flee east.
Then Hirtius defeats Cassius.
So we could have a situation by 41 BC where the Caesarions who still want vengeance see their last remaining enemies in the legions of Marcus Brutus.
What does Brutus do now?
CONSOLIDATE:
Would this butterfly the reasons for his poisoning?
The guy who poisoned him was, iirc, one of the tax collectors Antipater employed on behalf of Cassius; when this guy came up short, Antipater had to intervene to save his life from the Roman's rage, and he held a grudge. My thinking was
maybe he doesn't make his move if the guy his victim ignobly saved his life from is still in a position to threaten him or his area.