Honestly, there's a part of me that agrees that with Pachter in that I think that Nintendo has put themselves in a position where the interest in the "Wii" brand may not be there anymore. Let's face it; the casual market that the "Wii Stuff" games are marketed towards have moved on to smartphone games (Angry Birds, Gravity Guy, Temple Run, etc.) because they're on the go, and they're integrated with their cell phone's OS. There's also the fear that Nintendo will pull a 3DS and fail to portray clear differences between the Wii U and the Wii, resulting in a loss in profits. As well, Nintendo have to really try to market this towards more of a "serious" audience in order to prevent a lot of their missteps made this past gen; so far, it doesn't seem like they've managed to accomplish this goal. Then again, of course they haven't showed much that will be released on the console, but I still have this lingering feeling that more serious gamers won't readily attach themselves to the console due to A) the bizarre and potentially uncomfortable controller interface, and B) the fact that a lot of the new features that the Wii U is toting have been outdated (on the other current consoles) for years now, and of course it still seems to be lacking in a lot of hardware standards, like memory storage. Couple this with the fact that Nintendo still doesn't seem to grasp proper online infrastructures in a world where Microsoft dominates even with a paid model, and in my opinion I feel that Nintendo have a recipe for disaster.
They can still break free from these chains if they get themselves and third parties to focus on compelling new IPs, versions of popular franchises that can compete with the Sony and Microsoft versions, and build upon what they've learned about online in the past six years.