I'd like to suggest a reverse portable, such as the 3ds rebuilt to play on my TV. I was thinking of redesigning my Wii U gamepad to accommodate the lower half of the 3ds(touch screen, controls, cartridge slot, and micro sd card). The top screen would then be removed(obviously no 3d capabilities after this) and the output would then be sent through the pads video stream to the console to show on screen. Thing is, I would love a switch on the gamepad to keep the Wii U functionality in place as well, so a selector to change between the Wii U or 3ds.