Since we're already balls-deep into Wano, here's something I want to address just before we hit the climax of this arc. Has Oda ever actually promised that Wano will be Zoro's arc? The sole arguments used by the fans are that Zoro is a swordsman and Wano is a country of swordsmen, plus the fact that Zoro has previously showed interest in Wano on multiple occasions, which again does not serve as any sort of evidence for Wano being his arc; it's nothing more than personal speculation. Oda never promised us anything. Whatever happens with Zoro, you can only be disappointed with your own headcanon.