My problem with the WiiU is the fact its a HD Wii. The only reason I would think to buy a WiiU is for first-party titles and Wii exclusives. Why would anybody want to buy the new COD (for example) on the WiiU when they already have a PS360? I would only think of buying the WiiU for First-party Nintendo games, as I already own a 360 and plan on buying the PS3 for its exclusives. I probably would buy the WiiU for Nintendo games, but I just dont care for them now, they all suffer from a same-ness problem (save Mario, but you could make a COD clone with Mario, and it would probably sell like hotcakes).
In short, Nintendo making the Wii HD now is 6 years too late, IMO, as whatever the Wii had going for it probably wont be going for the WiiU.
Oh! and before I forget!