For Oda to pull off Oden being back he needs to make his presence relevant (if not why bother), while also finsihing Momo's character arc in a way that his father doesnt overshadows him, while also giving Yamato something to do in the arc thats important (a hero this late to the game needs something big), Let the rest of strawhats shine and have Luffy finish his will (thats the point of Luffy being back in Wano). How would Oda manage this? Seems like a tall order. So no safe to say that Oden isnt back from a narrative point. Think about it for a second. Oden is being teased in the same chapter that Queen got slapped by Chopper. Where is the need for him right now? At least show the Supernovas getting owned by Kaidou and BM first. The BP dont seem that formidable at the moment.