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1- Vivi being a Princess.

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2- Shanks appearing in Marineford War.

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3- Portgas D. Ace being Gol D. Roger’s son.

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4- Rob Lucci being villain.

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5- Doflamingo and Corazon having blood relationship.

6- Shichibukai appearing in the manga. One Piece was originally supposed to be a story to fight Yonko, not Shichibukai.

7- Supernovas still surviving in New World. Oda thought about half of them would have dropped out already.

8- Trafalgar D. Water Law being an important character. Oda thought Eustass Kid would become an important character, though.
