Just a thought. But would it be possible to install a dummy VC (virtual console) title for every VC emulated system. Then run some homebrew app with a file selector enabling the user to select a Rom for any of the compatible VC systems and have the hombrew app inject that Rom and savefile(SRAM) on-the-fly plus make a backup of the save file to the same location as the rom once the user exits the game. This idea is not unique to the WiiU and I have thought about it since 3DS injections were made easier using HANS. The 3DS method worked great but it required a lot of individual file patching and hex editing. Could all of that be done through homebrew. A nice UI file selector would make it easy for the user and make other emulators redundant since the official nintendo emulators are more authentic.