TB, you're right on about what Vito expected Michael's role to be. I look at Vito's vision as the intended evolution of the Corleone family. But I don't see Sonny engaging in fratricide except impulsively on the spur pf the moment.
"Generosity. That was my first mistake." "Experience must be our only guide; reason may mislead us." "Instagram is Twitter for people who can't read."