I thought he was already splitting his time between London and Cupertino around the time he took on his grander title several years ago. Apple Park was likely a rewarding (new!) endeavor, but their largely iterative product line probably doesn't inspire like it did in earlier years, and he's built a well-oiled machine of a design team to carry the torch (I agree with Gruber on needing a design decider, though). Being halfway around the world from your true home for work with hundreds of millions of dollars in the bank gets old. He's definitley made his dent in the universe.
