1) Front bosses: out the family there was a boss that went to meetings and went to prison (like fat tony salerno);
2)Ruling Panel: every decisione was take by a group of most powerful capos;
3)they had no a gotti or a casso that ruined the family and forced high ranking members to flip for save his lives;
4) no nepotism: no genoveses boss wanted that his son take his place;
5)no greed:Apparently they made more $$$ and share it without conflicts;
6) Every made man try to take a plea and if get long sentences keep your mouth shut and made your time.
7) they had 5 wiseguys that flipped but no rats between the top ranking men aka not another gravano.