I don’t expect there to be death as a starter but if it was up to me...I would kill off:
- Kidd (cause Law is too much overused by fans, so Kidd can be a shocker one) (also a death from supernova)
- Otama (a kids death is always hurtful) this death can be impactful the most on Luffy for her connection to Ace... and Otama too made connection to the two most emotional characters, Usopp and Nami.. so it can get very emotional and sell it out for us fans
- Hiyori (because Momo is vital for future events, also women’s death is always pittied by fans) her death is meant to drive scabbards even more crazy. And meant to drive Momo to go crazy too... not to mention her connection to Zoro, and Sanji’s interest in women in general...
- Finally Denjiro... cause spies always end up dying... also he’s among the favs in scabbards... and he’s like Kinemon’s right hand where he may sacrifice himself for Kinemon to stay alive to be able to meet his wife in future...
And that’s about it...
but generaly I don’t believe any will die anyway