He had an interview with the guys at IGN and spoke about their online strategy and said this:
We have not thought that offering the same features that already exist within other online communities would be the best proposal for very experienced game players.
Nintendo has paid a great deal of attention to the dynamic of people playing video games together in the same room. With Wii U, we thought about expanding this concept into separate rooms which are connected online. Miiverse is a network community dedicated to video games that represents a very unique game-dedicated social graph that has never existed before.
He also spoke about the update on the WiiU at launch:
Personally I think that users should be able to use all the functions of a console video game machine as soon as they open the box. So I feel very sorry for the fact that purchasers of Wii U have to experience a network update which takes such a long time, and that there are the services which were not available at the hardware’s launch.