I believe the entire era of 1958 to 1979 is extremely interesting for additional storytelling to the Godfather movie saga. So much could have happend in that period.

Would Michael remain lonely from the end of GFII until the start of III? Or did he operate in more illegitimate businesses throughout these years? When, how and why was Joey Zasa entered in the Corleone Family, what about Young Vincent, etcetera etcetera.

I'm very interested in the timeline, Ricardo!