@krypt3ia You'd make the strongest case with evidence against Trump from before Epstein's arrest. The man was an inveterate opportunist, and would sell his loyalty to- or against-Trump if he thought there was anything to be gained. After their falling out, he seems to suggest that he could say things to harm Trump's reputation if he gets something out of it, so this might be more of a parting shot/revenge attempt from the grave, if authentic.
Which isn't to say Trump wasn't aware of what Epstein did, wasn't friends with him, or wasn't predatory towards young women; just that this might not be the smoking gun I'd look for as an investigator or a prosecutor.