Seems like a silly/unnessecary thing to have. You would need the actual hardware anyway to control the touch screen, and the display would be very small on the screen if stacked vertically, and would be very awkward for other games stacked side to side.
Nintendo gave out official capture kits to media outlets but there is almost certainly some amount of display lag between the console and the TV output, since it's not intended to be played off the screen, but rather captured for later playback.