It'd be good for Nintendo to no longer have to deal with hardware. They struggle with it. They could still make their games a gen behind on other platforms and their fans would buy them.
Struggle with it? They're the only ones who try to keep cost/effectiveness ratio to reasonable levels. Microsoft and Sony keep putting unnecessarily expensive computer tech and then sell it at a loss, with the latter company's debt now in the billions due to that strategy. I really can't see how you'd need much more than the Wii U or even PS3 at thisa point; you're not exactly using it for CAD or SETI, are you?