This quote peeked my interest:
“What I really want to do is be in the forefront of game development once again myself,” Miyamoto said. “Probably working on a smaller project with even younger developers. Or I might be interested in making something that I can make myself, by myself. Something really small.”
It seems like he wants to go back to a more hands-on approach where he himself actually comes up with and designs the core gameplay idea, I think. Pikmin was the last time he did something close to this I believe.
There are a lot of things he could do at Nintendo. i wonder if he would be able to make a good RPG?