3DS. 3D is not an essential feature, but it differentiates the product. 2DS, no 3D, not doing so hot, despte the reduced price.
The gamepad is a nice feature that diferentiates the Wii U. Without it, its just a box weaker than the others that runs Nintendo games. The gamepad does not break the Wii U. Though it could use a redesign to make it smaller.







