The-problem-with-WiiU is that they set themselves squarely in the same square peg for round hole situation they went with GameCube.
In the end, success of the Wii was highly dependent on third party support and outside-the-fanbase support. Wind Waker and Mario Sunshine (from a time when Mario games took 5 years to come out!) were unable to save the GC (and technically, neither did RE4/Viewtifull Joe if we want a Platinum games twist here), and I don't see it happening for the WiiU either.
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