Way too much on Johnny Fontane.
One thing that's interesting to me is how the substory would have changed if Puzo had been writing at different times. I think Puzo himself sort of addressed this in GF2 by making Geary the large secondary character, which I think is at least partially a reflection of politics merging into popular culture. If you pushed it into the 80s, then you might have had a Wall Street guy.
