Disclaimer: If you're one of those naive and delusional person who still didn't get on the page, and believe that the Wii U is not doomed, please don't intervene because this is a topic that goes further than that.

So, like most people who are gamer and hate the Wii U, I love Nintendo and have had most of their console since the Snes. And what made Nintendo stands out from other competitor (except Sega back before the Dreamcast) is that they also had one of the best roster of game IPs.

And it wasn't just about high quality  that NONE of the Nintendo game have achieved since Super Mario Galaxy (you don't imagine the talent, level design, and craft that got into the making), it was also about strong images.
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Now the problem is Nintendo, under the pressure of the Wii U failure (all the publisher have understood it, that's why there's and there won't be worthy new third party exclusives) and the slower than expected selling 3DS is doing the worst of all mistake: they're ruining their IPs.

Mainly by doing TWO commong bu fatale mistake for the appeal/future sales but also the IPs quality:

1. Milking

Mario
there's already 3 super mario, New Super Mario Bros. U (which sold a decent but low 2,7M with the launch), Super Mario 3D World (barely sold 0,7M) and even New Super Luigi U (barely sold 0,6M) unit

Other Mario franchises
Usually you would have to wait for a few years before having the ONE Mario Kart game, Super Smash Game, Mario Olympics, except for Mario Party which I believe died out with Mario Party 9 (that barely sold 0.9M...on Wii)

Now there's already a Mario Kart Wii U coming, knowing that Mario Kart Wii sold 34M which the Wii U console hasn't even sold yet, there's already a Super Smash Bro, knowing that Brawl has sold 12M units, and another Mario vs Sonic Soichi 2014 Olympic Game (wow what a long title...)

Donkey Kong
Donkey Kong Country Returns was already a letdown, a nice letdown but still and it only sold 6M on Wii.

Well they need to step-up their game, instead they're ALREADY releasing a Donkey Kong Country Tropic Freeze, while the Wii U has not even sold 6M...

Zelda
There was only one nez Wii Zelda game (Skyward) and it barely sold 6M.

Now they released a GAMECUBE game which happenned to be cel-shading so the only to be easy to remaster, althought it's 2013 and it works on any Macbook, as beautiful, with Dolphin+Textures. They barely sold 0,5M

And they just announced what Nintendo would've never done: a Dynasty Warrior Zelda knock-off....

Metroid
The first Metroid Prime was great. The second was okay. All the others ruined the serie because: milking. The worse they could do is make another Metroid FPS and they already announced one...

2. Low quality

It's simple, with a console as weak as the Wii U and a concept as lame as the touch pad, they can't push the game further like they always did. So not only are they milking their franchise way faster and more than they did on Wii, but they're releasing cheap sub-versions and knock-offs of their games.

THIS is what is making Nintendo IPs completely loose image and appeal although that's exactly the contrary they need after the Wii. And Pikmin 3 is no better, it only impresses the (kids, naive, ignorant, weak minded...I don't know?) people who support the Wii, but to most people it just looks like Pikmin 2 (which is a gamecube game btw).

The only good game, the only one I want a Wii U for, is Wonderful 101 which failed in sales but is exactly the effort Nintendo should be making at a launch period.