As fun as it can be to dog pile on things without giving the future much thought, but I do believe Oda will address a lot of the Kurozumi and Shimotsuki stuff later. The Wano arc is over sure, but we are going to be coming back, so I don't see why the issues can't be addressed then. Also when we come back I think it would be cool if there is a Wano civil war and Zoro gets a rematch with Denjiro. Need to avenge the loss against him plus have a fight against a real swordsman.