He might be the next Straw-hat since
- He has allot of respect towards Luffy
- He made a sotra-promise to Ace that he will protect Luffy(even though he said he will protect only those who he has high regard to and now he respects Luffy just as he said he'll protect him with his life at marineford)
- He is a good helmsman
Is he gonna be the next Straw-hat?