this is something I've wondered too. I don't own a hacked or exploited system, but I have downloaded every game I own. unfortunately, well over half are the European version. people say the system is region free, which it is, but dlc and saves are region locked. I know saves are at least, cause I once had two poi saves. I think new super mario deluxe can be used in any region so long as you change the content/title id for it. maybe other game saves can do the same. there's probably a way to convert them if they can't be, but as I said, my experience and knowledge are limited on the subject.