Shankstards wet dream for Mihawk to join buggy. Mihawk is in no need of a crew
How do you think Mihawk will be relevant in the future then?
Mihawk can be inserted almost anywhere in the story that Oda wants..I don't think it was designed just to be Zoro's opponent..I really expect him to have a bigger role
What will be his goal? If he isn't searching One Piece with a crew, he can't have a bigger role.
Mihawk fighting Zolo on a random island when crew doing nothing = no tension, no excitement, we know Zolo needs to win, if Zolo loses, no big deal, their primary goal is finding One Piece.
Mihawk fighting Zolo while Luffy fights Blackbeard or Shanks = Mihawk serving to Shanks or Blackbeard, Oda wouldn't do this.