Elbaf obviously will be the Island where we get the main focus of CoC.
Just look at the characters involved:
Shanks (confirmed CoC and Haki-specialized), Kid (confirmed CoC), Luffy (confirmed CoC)...
Additional hints in that direction:
Kid and Luffy had their focus on their DF (and CoA) on Wano, while Luffy also had his focus in CoO back then in WCI. So he is missing his arc about CoC now and who would fit better than Shanks for this?
I also assumed for along time that Elbaf will be the island focused around CoC, for example with this theory of mine:
Theory - Adv.CoC of Kid -> TYR | Worstgen
Just look at the characters involved:
Shanks (confirmed CoC and Haki-specialized), Kid (confirmed CoC), Luffy (confirmed CoC)...
Additional hints in that direction:
Kid and Luffy had their focus on their DF (and CoA) on Wano, while Luffy also had his focus in CoO back then in WCI. So he is missing his arc about CoC now and who would fit better than Shanks for this?
I also assumed for along time that Elbaf will be the island focused around CoC, for example with this theory of mine:
Theory - Adv.CoC of Kid -> TYR | Worstgen
Elbaf might reveal black blades (even though Wano shouldve) if someone like Mihawk or Shanks is there