Decline? No, I would say settling. In philly the men that was sentenced In 88-89 done their time, they are not too old so can muscle on the street and under Ligambi was made 5 or more people so have 40 made men.
In New York after Gotti reign Cefalù stabilizza the family, same thing for the Luccheses with crea. The colombos was ever full of rat so never really recover. Cant speak for the bonannos.