The problem if someone golden age mobster would try to rebuilt a defunct family wold be the structure.
Ok there some smart wannabes and a old guy would made them with the traditional rite but this not made a family but a gang and why some wannabes would want to be made when just made money ?
For sure in Pittsburgh,saint luois,new orleans ecc there are criminals with italian surnames but are street guys that doesn't want to follow the rules.
I think that maybe kansas city family still exist while detroit was ever active and was like the decavalcante:small but active.