I think it would be smarter to release a cafe branded Wii style controller though, if they intend to use it for new games. It's kind of annoying really, that Nintendo appears to be shifting gears in regards to what they established with the Wii though. Either they see the Wii setup as a semi failure, or they think they need to have a new gimmick to push new hardware.
An annoyance, but it is expected with a new console. Then again, the Playstation home consoles have been comfortable in practically sticking with one controller for many years.
As for new gimmicks for new hardware, Nintendo needs it as well as other companies. Love it or loathe it, new gimmicks generate much interest whether they become lasting innovations or not. As sensible it would be, a straight and moderate upgrade in power would be a bit boring.
In regards to the Wii's remote and nunchuk being a semi-failure, I think that holds some weight given Nintendo's efforts in it. Though there are some exceptions, it seems for the most part that even Nintendo couldn't figure out how best to employ their motion controls. Or at least how best to employ the motion controls to match our imaginations when we first saw them. Perhaps things would have been different if Wii Motion Plus had been there at the beginning or perhaps not.