couldn't someone make an interface that lets you plug usb HDD into the SD slot on the WII u for loadine backup loading? kind of like the way we use a hard mod MSD to SD adapter to dump and re flash the 3DS NAND ? would it be as easy as connecting the proper pins from the MSD to SD adapter to the wires from the cut ends of a female to male USB extension cable? or would we need something in between to translate and trick the wii u SD reader into thinking the HDD is an SD card? maybe a Rpi or adruino could be used to perform this?