That's true, that particular IP makes extra sense on mobile devices. I think the number of individuals now in the category of having plenty of disposable income but not necessarily having the time/drive to buy Nintendo's dedicated consoles will prove a very profitable audience on the devices they already own (iOS/Android). Nintendo could charge a serious premium for any of their apps and I bet many people would pay it. Or they can release freemium apps with gobs of unlockable content... Either way, it seems like its inevitable at this point that they will venture outside of their little walled garden with their closely guarded IP's.

Wii Fit seems like a natural... fit. They already ship with a step counter that integrates into your game at home. If would be pretty cool actually if there was a virtual yoga teacher in the park and people gathered and did yoga as a rag tag group.

I think the key would be making Pokemon Go work and then building incentives to play other titles, rewards for sticking to Nintendo's sphere.