Ok, so, this is strictly hypothetical until someone forks out the ungodly amount of money for it, but here's something someone invented several years ago: http://www.saelig.com/product/MIO001.htm It's a microSD to USB A adapter. The original intent was something like this: GOOD NEWS: It officially supports MicroSD to SD card adapters, thus, could work for the Wii U. BAD NEWS: It claims to be "compatible to the latest SD standard" which at the time was SDHC, capping at 32GB. So, the question is... is it SDHC compatible due to what is under that white hood, or is it SDHC compatible because SDXC wasn't available at the time? I'm thinking it puts out a LITTLE power, cause it would have to light up some flash storage with it. If I had a Y-Connecting Hard Drive Caddy (for double juice intake, one from SD slot, the other from a front USB port or something) then I MAY be able to achieve these backups to be loaded via a 256 solid state drive. Who wants to go first? Heh.