The dearth of first party titles on Wii U is inexcusable because it's not like this is a new concept. People buy consoles for games and people especially buy Nintendo hardware for Nintendo software. That's why it's even a thing. If Nintendo can't support their own console, why should consumers or third party publishers support the console either?
I understand and appreciate that Nintendo doesn't release their major titles until they feel the games are worthy of release, but seriously, plan accordingly. They've been making games for over three decades; they know how long development takes. If Nintendo has to pad their lineup with ports and remakes, so be it, but that **** needs to be released at or around launch, not a year later unless it's the second round of those releases.
I see Nintendo launching a successor in 2017 because Wii U will be fine albeit unspectacular (I see a turnaround, just nothing like 3DS) and I think that could be their last home console if they can't turn things around. At that point, they would probably just focus at what they're good at which is handhelds. If their next console could be their last, they should go all out. I don't particularly like the idea of taking a loss on hardware, but desperate times, right? Take a loss to launch what is the equivalent to a decent 2017 PC gaming rig which should trounce PS4/One at that point. Go x86-64 for easy porting. Make deals with third parties to get the PC versions ported day one. Launch with Mario Kart 10 (I presume Mario Kart 9 will be portable and launch first). And for the love of blob, market the thing like there's no tomorrow simply because there may not be one for their consoles. This is all, of course, assuming they get the basics right. For example, the operating system should be complete enough that the console isn't a dick when you plug it in and turn it on. Maybe you can be playing a game within 10 minutes (after setup) while the first system update downloads in the background.
Will this be enough? Honestly, I have my doubts. However, if Nintendo creates what is essentially "the anti-Wii U," the same old excuses from third parties won't apply anymore. I actually expect new, lamer excuses. "It's too powerful?" "There are too many different vowels in 'Nintendo.'"