What can Nintendo do to repeat the success of the Wii next generation?

[Cheebee]

Well. Well. We won't know until Nintendo decides to inform us. It's Nintendo we're talking about after all. So.
They won't do any intricate, complicated virtual reality-stuff where you'd have to don goggles or attach sophisticated peripherals to your body or stuff like that. One, that'd be too expensive, and two, it'd be too much of a hassle, Nintendo like to keep things simple, accessible and affordable.

I won't even try to speculate on what wondrous things Nintendo might conjure up in the future. No use. We'll just have to be patient.