I wonder, would it really make much sense to release anything right now? Even if Nintendo released Pikmin 3 or Wonderful 101 next week, sales would just rise for a week before going back to the current level. Wouldn't these games just be wasted that way? Wouldn't it make more sense to let the Wii U rot for the upcoming months, until Nintendo has a solid line-up ready? Let's say starting this Summer Nintendo releases Pikmin 3, Wii Fit U, Wonderful 101, Wii U Party, Bayonetta 2, Mario Kart 7, Mario Kart Universe and Wind Waker HD -- that would give them two solid releases a month. Wouldn't that help Wii U's mindshare a lot more?
Of course, they could release a game every two months instead, but in the meantime people are likely to forget about the console again, so... what would be the point of it? Q1 and Q2 would look disastrous financially, but there's a good chance that this is going to happen either way.
They also could to retail the favor to cut the Basic model completely and replace it with the Premium bundle for the same price (and bundle Nintendoland with it in Japan too). Yeah, Nintendo's making a loss with each sold Wii U, I know. But I don't see why they wouldn't be able to sell the Premium back for the same price. The additional storage and all of the included plastic crap are literally worth a dollar or two in production, while including a pre-installed copy of Nintendoland costs them nothing at all (sure, they would like to sell it, but they just have to face the reality that people aren't interested).