We're not sure how it's going to work yet, so that's completely speculation at this point. Nintendo has stated that the adapter will only be compatible with Smash U, but whether or not we can force it to work with other games via homebrew, whether those games are Wii U or Wii, will depend completely on exactly how the adapter works. Also, Moydow, I'm not really sure what you're talking about with not inserting the SD card until Brawl's title screen--I always have my SD card in my Wii U from startup to shutdown, and nothing has ever happened that has prevented me from playing the game.