EnzoBaker- I agree with everything you said, including the leadup to a confrontation between Tom and Michael in GFIII, I don't believe it would have been over control of the family though. Tom never would have tried to take control of the family from Michael. He might have disagreed with some of Michael's decisions, but he also disagreed with some of Don Vito and Sonny's. Tom was too loyal to betray the Corleone family.