Oda said in the lastest SBS something about Ceasar being limited in his work on lineage factor only being able to recreate powers from animals that already exists. Which is why he can't recreate Mythical Zoans or Logias.
But he also says that Vegapunk allegedly surpassed this limitation (an indication would be Momo's fruit based on Kaido's lineage factor), which is why people are already speculating that this is the big trump card from the SSG. I assume some extremely overpowered Pacifistas or even recreated Logia or mythical zoan users.
Since Judge worked on lineage factor as well alongside Vegapunk, and gave powers (elemental powers) to his children, it can lead to some explanation about Sanji's fire powers.
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Btw, what still doesn't feel right to me about the last chapter, is that Chopper could barely move after Monster Point, and we still had a small flashback that he extended it even further with Ceasar's help, but with EXTRA risks.
Is he REALLY gonna be in shape to heal Zoro? Or maybe that medical staff that helped him with the virus thing.