Zelda next year would be great but I'm skeptical that it can be done when you consider that FExSMT and Yarn Yoshi are unlikely to be out next year and have been in development for just as long if not longer. You'd think both of those games would have considerably shorter development periods.
On topic, I think Nintendo's best chance for next year is making sure the ~5 games they do release are TOP quality and heavily advertising exclusive indies to fill the gaps. If they manage to get games like A Hat in Time on the Wii U (and it's as good as it looks), why not make a big fuss about it? Release some TV commercials for it and show off the unique and colourful experiences that Nintendo consoles can provide.
I hope their release schedule looks something like this...
Feb: DK Tropical Freeze - May: Mario Kart 8 - June: Bayo 2 - September: Smash - November: X
They'll probably have at least one other retail title to release, probably around November/December.
