He now has ACoC and will be the WSS. There is no need for him to stay in a pirate group that is inferior to him. He might duel luffy sometimes and if he wins he will leave or takeover as a captain. He might turn into the lone wolf like Mihawk being all by himself searching for a worthy opponent, someone stronger than Luffy, Mihawk and all the others. I think that will happen once Luffy got his dream and got the pirate king. There won't be anything left for zoro once he stands out as the victor. And he will have kept his promise to Luffy by then. What do you guys think? Will Zoro take the Mihawk route? Or the Reighley route?