current project I'm working on, hardmoding with a pi zero and adding a power switch wired to battery. The pi zero is small enough to hide inside or tape outside with a xl. Built in wifi would allow ssh directly to nand read/write. This would be useful for developers. You can remotely enable USB device mode to dump that way or ftp transfer. This way you don't need a pc at all and direct read write to nand with hardmod. Again this is of no real use to non developers.