BootMii runs in GC Mode? Didn't know it calls on the mIOS... If it doesn't run on the miOS, all good, users should be able to use the console keys to navigate. If it does, then yeah, problems I assume but I think people can re-install it. Provided the Wii is running 4.3 or lower and if Nintendo doesn't have some checks in place. A lot of IF's right now but we'll see when it's out. I think they just simply removed the mIOS on the console.