Is just a feeling of how the series works. Oda almost never kill characters, even when they do sacrifices like this just remember Pell and Pound(probably others that I don't remember for now).
Sulong form is a hype and Oda is carrying whole New World by hype only since the history itself is not that great(except for somethings like Oden's flashback). So he will comeback saving Carrot and Wanda from Perospero and using his Sulong Form, this will be his real time to shine. Maybe after that his life spawn could end.
Sulong form is a hype and Oda is carrying whole New World by hype only since the history itself is not that great(except for somethings like Oden's flashback). So he will comeback saving Carrot and Wanda from Perospero and using his Sulong Form, this will be his real time to shine. Maybe after that his life spawn could end.