The Earth, Sea and Sky Pattern, and what it means for the Elbaf arc
This pattern suggest that Sanji's ancestors might've been from a sky island in the Heaven Realm of Elbaf and this could be a good way to reintroduce Enel back into the story
One Piece has a pattern about the earth, sea and sky that connects some of the Strawhats crew, the ancient weapons and the three arcs that were built up since pre-timeskip.
First, we have Zoro who is the son of Terra. His ancestors came from Wano where the underworld weapon, Pluton is buried. Then, we have Jimbei who is The First Son of The Sea. He came from Fishman Island where the sea weapon, Poseidon is hidden on the ocean floor.
Now, Sanji is the son of Sora (sky), but we don't really have his part yet. The only other arc that's been built up since pre-timeskip other than Wano and Fishman Island is Elbaf. I think those three arcs are definitely connected. Their sovereigns all have a purple/pink theme and they follow the kingdom arc archetypes (Warrior = Loki, King = Momo, Princess = Shirahoshi).
Chapter referenceChapter 238Ganfall talking about the High West alternative entry
Chapter referenceChapter 240Pagaya explaining about Pyrobloin
If we follow the pattern, Sanji's ancestors and Uranus should be in Elbaf, and I think the Heaven Realm would be the best place for that. There was a theory that there is a sky island up there. Ganfall mentioned an alternative entrance to Skypeia and the island clouds are made of Pyrobloins which makes the trees and animals in Skypeia gigantic. So, if the Pyrobloins from the sky island rains down the island in the waterfalls, it would explain why Elbaf became so big. The pattern also implies that it would be a place in Elbaf that's tied to the sky so this is perfect.
Chapter referenceChapter 1023Queen relating Sanji's fire power to his Germa upgrade or a Lunarian lineage
Queen mentioned that the only way Sanji could have fire powers is by having a Lunarian DNA. If Sora's ancestors comes from the sky island, it could explain how Sanji could've had this DNA. It would also be a good contrast because the Lunarians used to live on the Red Line and now they're in the Heaven Realm while according to this pattern, the Uranus was initially in the Heaven Realm but according to Vegapunk, it is now with Imu.
Chapter referenceChapter 1129Nami striking Road with lightning
This could also be a good way to introduce Enel back in the story. The start of Elbaf has a lot of foreshadowing like Gaban's Yasotakeru foreshadowing his defeat, Road paralleling Imu, and his pets paralleling the God's Knights. Well, Road was defeated by lightning or a "divine punishment" as Nami put it. If there is a sky island on top of Elbaf, it would be a good excuse for Enel to come to Elbaf specifically (it might even be the reason the Lunarians fled there too) and deal the last attack on Imu when everyone else is down. This could also be a good time for Urouge to come back because the last time we saw him, he was in the Balloon Terminal where we know he can Carl Fredrickson his way up to the Moon. We also know that Urouge is from Birka so it's not such a stretch to say that he was trying to find the man that destroyed his home. It would also be cool for Enel's reintroduction into the story to be slamming a Worse Generation pirate from the sky and then dealing the final blow to Imu.
