Due to their immense DF powers, all of the SHs will need to master haki in order to beat their BBP counterparts.
Luffy will likely need to unlock new tiers of haki we haven't even seen in order to beat Teach. At the very least, I think Luffy will gain the ability to use Garp's galaxy impact, allowing him to match the gura gura no mi.
Zoro will need some form of advanced observation in order to tag Shiryu due to his invisibility
Sanji will need ACoA in order to blast through Pizarro's island golem
Robin will need CoO in order to see through Devon's illusions
Chopper will need CoA in order to negate Doc Q's powers
Usopp will need FS in order to predict Van Augur's teleportation and tag him
These are just the matchups that I am pretty confident will happen, but I see all of the SH's matchups following a similar trend. I think since the SHs know they will be going up against pirates with powerful DFs, Luffy, Zoro, Sanji, Jinbe, and maybe even Usopp will teach the rest of the crew how to use haki during a brief training period before the final SHs vs BBP confrontation.
Luffy will likely need to unlock new tiers of haki we haven't even seen in order to beat Teach. At the very least, I think Luffy will gain the ability to use Garp's galaxy impact, allowing him to match the gura gura no mi.
Zoro will need some form of advanced observation in order to tag Shiryu due to his invisibility
Sanji will need ACoA in order to blast through Pizarro's island golem
Robin will need CoO in order to see through Devon's illusions
Chopper will need CoA in order to negate Doc Q's powers
Usopp will need FS in order to predict Van Augur's teleportation and tag him
These are just the matchups that I am pretty confident will happen, but I see all of the SH's matchups following a similar trend. I think since the SHs know they will be going up against pirates with powerful DFs, Luffy, Zoro, Sanji, Jinbe, and maybe even Usopp will teach the rest of the crew how to use haki during a brief training period before the final SHs vs BBP confrontation.