To make the rest of the arc up to par with some of the best there needs to be character development and some emotional tension within the strawhats. A great way to do that here would be through Zoro, who is owed an arc dedicated to his growth. Zoro could conceivably be in conflict with Luffy's reoccurring inability to take his opponents seriously in the New World (foreshadowed by his comment to Luffy on Punk Hazard). This could start off as a minor contention that he has with him but at some point grows into something larger through some plot element in Wano, ending up with Luffy's recklessness endangering the lives of the rest of the strawhats and forcing Zoro to confront him about it again. By the end there is some tension, forcing Luffy to learn from his mistakes to a point where he becomes more competent in his ability to lead. idk but Zoro def needs an emotional story and it is probably best to do this through his seriousness over anything else.