I don't just remember a filler arc, but then I wait for the American dubs; I read manga to stay up to date, and so I can WATCH anime, since I am not fluent in Japanese.
So it should be 4th Shinobi World War Preparations, with Naruto starting to get 9-Tails Chakra Mode, hopefully, the Fish in Shark Mode, another Reinforcement Guy, and perhaps a nice, 3-element super Tsunade, so that she gets the same attention that the other Kages, and finally Danzo, got (not necessary, but I certainly wouldn't mind). Also looking forward to another Konan with good stats, and to finally getting a real Tobi with Sharingan, and hopefully Rinnegan, even if it will have Madara's name on it. Not sure if they'll drop another "what? that's Kabuto?" Kabuto card, or the ramped up Impure World Reincarnation stuff, but I kind of doubt it; that can be the focus for Set 28
. Maybe the Non-Unique White Zetsus with Copycat ability, too.