They do kinda need a miracle. They probably need some new IP that will dramatically bring in a new audience that they don't have right now.
They need to be brutally honest with themselves about control inputs too. If you are going to bet the farm on a new control type, then you better really evaluate whether or not the new controller is truly a mind-blowing revolution that is immediately understandable to the consumer or not. If you have to explain why your product is revolutionary or worse come up with a reason as to why ... you should abandon this approach in R&D and change course.
They need an incredibly strong launch window, though I think they may have that as they're probably hoarding games (the "real" Animal Crossing, the next 3D Mario, perhaps a crossplatform Zelda U/NX).
They need to be much smarter and sharper than they have been in the past 6-7 years.
