Musou Orochi Z or whatever its called isn't a add on. Its a complete game taht was basically two games merged. So i dunno if you'd consider it a step backwards or not. Honestly I wouldn't bother importing it, unless you really want the game and have played everything else to death. With Pirate warriors coming out (which will be the greatest thing ever i hope lol) and DW7E, you'll probably be playing other stuff to warrant the purchase.