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What if instead of developing the Wii U and 3DS, Nintendo used the resources for both to develop the Nintendo Switch, releasing it between the Wii U's launch date and the PS4/Xbox One's release date a year later? All of the 3DS games from 2011 go to the 3DS. Nintendo stops supporting the DS around the start of 2012.

Would it be technologically feasible, even if it costs more than the Wii U? Could they use cartridges? How big of an impact would having all of a Nintendo's undivided resources thrown at it, instead of dividing them between two systems?
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