Well I have theorized that the fight for the last poneglyph will be a tournament of sorts, maybe teams like YYH. If the burnt scar man is a Davy Back figure then it could be a Davy Back fight where serious characters can have duels (Zoro vs Mihawk, BB vs Shanks) but comedic characters like Buggy and/or Usopp can have challenges
@Paperchampion23 btw seems like what we talked about might actually happen