Obviously, only Gear 4 isn't going to cut it against the Yonko and their top men. Granted we haven't yet seen the true strength of Zoro and Sanji, but Luffy is totally not at the level of strength needed to beat Kaido and Big Mom. He needed help to beat Doffy so at best he is Shichibukai level. Crew wise, I am absolutely 99℅ sure that Jinbei is going to join the crew. So there's that. But I really think Luffy needs another new gear or Awakening. So here's the question, what do you think will be Luffy's new power up?