To have such vision in one man is something that will not be replicated. But Nintendo is at the point where they have the best of the best in Japanese talent working for them. I mean, you have to have 5 years industry experience to even get on board in Nintendo nowadays, and their team directors that work under Miyamoto in EAD are excellent in their own right
Worst case scenario: Nintendo loses its sense of singular vision. The games will stay similar quality, but it won't be part of a grand, unified scheme for EAD
Monster Hunter: pissing me off since 2010.