I like the Gamepad, but it's hard to argue the general public's response to it has been colder than ice water. No one cares about it, and worse it's apparently adding like $100 to the cost of the console (according to Iwata himself).
If they were going to make a console around this concept, then IMO it shouldn't have been part of the "Wii" brand at all. Make a new brand for it, keep the Wii as a budget motion gaming brand.
Hmm... maybe the GamePad could have been the MotionPlus/Rumble of this generation: required for a few games, supported by many others.
What would you have named the Wii U?
Love and tolerate.