I'm confused, are you talking about game dumps? because there are already game dumps on the net, you just gotta know where to look
you don't need a hack to just dump a game, there are ps4 dumps floating around, but no public hack in sight, either...
if you are talking about other dumps, then I'm sorry
stage builder?
nah, I think they learned from their mistakes with the last smash bros
amiibos?
interesting, maybe, but highly unlikely, the data, that will be stored on it, will definitely be encrypted, it would be necessary to crack that enryption AND figure out some flaw in the whole amiibo system to create a buffer overflow, when it loads the data and I'm pretty sure, that even if this theoretically worked, it wouldn't give us IOSU access (duh >.<)
usb controller hook up?
uhm, no