These are just assumptions but lets start anyway.
Elbaf is Shanks island. And BB pirates might be there also.
If that is the case then:
Luffy will obviously face BB
Zoro might face Shanks since he is a swordsman and he needs to surpass him to be considered by mihawk
Sanji might face Aokiji or Ben Beckmann
Jinbei might face Shiryu (I don‘t think zoro will even have a low diff fight against him)
If zoro really is the deuteragonist he will face the second strongest character which will be shanks.
If that happens we might see zoro and shanks split the skies.
Elbaf is Shanks island. And BB pirates might be there also.
If that is the case then:
Luffy will obviously face BB
Zoro might face Shanks since he is a swordsman and he needs to surpass him to be considered by mihawk
Sanji might face Aokiji or Ben Beckmann
Jinbei might face Shiryu (I don‘t think zoro will even have a low diff fight against him)
If zoro really is the deuteragonist he will face the second strongest character which will be shanks.
If that happens we might see zoro and shanks split the skies.