Iwata can't allow this to happen. It's really that simple. The console concept should never overshadow the need to build install base, to sell games (that's the WHOLE point of hardware).
Drop the freaking tablet controller as a standard, make it optional.
Cut the price to $199.99 w/NSMBU + Wii Sports Club this April with a Wiimote + a redesigned Pro Controller shell (keep those costs down). Launch it the same day as Mario Kart 8. It basically becomes the "Wii 2" at a price that's acceptable to parents/kids and people maybe wanting a secondary Nintendo/party console to go with their PS4/X1.
Sell the tablet pad seperately for $89.99 w/Nintendo Land 2 (slap together a few new attractions -- Star Fox, Wave Race, mmm mmm). Existing Wii U owners get Nintendo Land 2 for free from the eShop as a thank you.
Incentivize hardware sales with eShop bonuses. Pre-order X? Get Xenoblade HD for free. Pre-order Bayonetta 2? Get Bayonetta 1: Director's Cut on the eShop for free. Buy a third party game like Watch Dogs? Guess what? You're enrolled in the Nintendo Premium Club. You get a Samus figurine from Best Buy or Game Stop + Metroid Prime Trilogy HD from the eShop. This is just using assets Nintendo already has.
If doodling on Miiverse gives you a hard on, great, that functionality is still there for you, but Nintendo shouldn't sacrifice their entire console division on such a low appealling concept.







