Use a homebrew tool like Dumpling to rip your physical game discs, updates, and DLC directly to an SD card or USB drive in folder format.
Instead of managing thousands of tiny files in a folder, a WUA file bundles the base game, updates, and DLC into one clean package. wua wii u roms free
Use a custom firmware guide to softmod your console. Use a homebrew tool like Dumpling to rip