If Iwata were to resign or be cut loose who do you this his successor would be? Miyamoto, Reggie, or some unknown entity? I, personally, have no clue but its always fun to speculate.
"Games are a trigger for adults to again become primitive, primal, as a way of thinking and remembering. An adult is a child who has more ethics and morals, that's all. When I am a child, creating, I am not creating a game. I am in the game. The game is not for children, it is for me. It is for an adult who still has a character of a child."
Shigeru Miyamoto