"Can Nintendo drastically alter WiiU similar as 2DS did to 3DS?"

[fleischr]

If Nintendo made a smartphone/tablet add on like this

And allowed you to play WiiU, VC, and maybe some gameboy, DS, or 3DS games on it, that might sell pretty damn well if the design and marketing were just right.

It could act as a WiiU gamepad. Maybe even a stand alone WiiU on it's own? The specs on certain high-end smartphones and tablets in the future could be comparable to the WiiU.