I always wanted the years between the end of the de niro sequence and the start of the first movie cleared up, Sonny in the family business and the viciousness of Luca, and perhaps some early Fredo being oushed about by Sonny

Sonny - Well then, business will have to suffer, all right? And listen, do me a favor, Tom. No more advice on how to patch things up, just help me win, please