Wow, that's a big loss.
Sadly, and I say this as a happy WiiU owner, I don't think there is much they can do for the WiiU.
They might get some better sales when Mario Kart 8, Smash and Zelda are released but it still won't make much of a difference.
At this point the third party support for it is basically dead. It will forever stay a Nintendo First party machine. It will keep getting great nintendo games but that's not enough to get more sales.
I guess at this point the best they can hope for is trying to make the WiiU sell as much as they can. And then start next gen with a new, more focused, sytstem along ps5 and X4.
They could try to make the 3DS and WiiU to be more connected somehow. Try to convince some of the, much larger, 3DS crowd to get a WiiU
I kinda disagree. The WiiU is an awful console with some really great games.
Edit: Since software is what "makes" a good hardware, most people get the wrong impression about the WiiU. It's dated, slow, not impressive at all. But again, at least 5 "must play" games.
Which basically describes most recent Nintendo Consoles.
Same can be said about the 3DS. If you compare it to the Vita it has dated hardware, slow interface and relies on a gimmick 3D effect that most users seem to dislike.
But it has awesome software which makes it a nice console
They should release the Nintendo Entertainment System 2 in 2015. Announce at E3 2015 and launch on October 18, 2015.
Job done.
And sell like crap because the amazingly well selling Ps4 and X1 will have almost 2 years of advantage, all the big names and third party brands are already going to be on them, and A LOT of people will already have 1 or more friends with a Ps4/X1 (so they will also want one to play online, exchange games, etc).
Not to mention that would loose the trust of a lot of fans and current WiiU owners.
"Why should I get the new Nintendo console if they might just abandon it 2 and a half years later)