Didn't the Commission remove Bonanno as Don and replace him with Digregorio? Following Michael's death, would the Commission have replaced him? If so, with whom?

There are instances where Dons have been removed by other Dons (Genovese removes Costello); where a family member has taken over by murdering the Don (Gotti and Castellano); where the Don was imprisoned (Gigante and Rastelli). Which of the foregoing is the most plausible if MIchael died?

As I opined above, there's no novel or film indication of the composition of the NY underworld in the 50s and 60s. We cite Pentangeli, Neri, Rocco, and the Rosatos as players, but noone else except Roth (with Ola) who was not Mafia.