Could you imagine if Carlo Gambino on his deathbed instead of the original mistake he made, what if he made his son Thomas the new boss? $ wise it isn't comparable, Tommy Gambino made Little Allie Boy look like a corner store hustler. But don Carlo realized at least somewhat that you can't let nepotism go fully to your head.
Yes but the decision to made boss his cousin Paul Castellano and not Dellacroce wasn't a wise decision,and if I remember well Don Carlo never inducted his son Thomas.
For the colombos the power is power and without a commission nobody can force persico to step down,maybe when teddy jr will be out he (in my opinion) could made him street boss but the snake until his death will continue to be the boss.
