Well serious question… Who do you think will replace one of the admirals?
I for now have only 3 candidates.
1. Smoker: If he improved on a big scale and can see him becoming one cuz he is logia as well. White Snake would be a fitting name. But I think he will refuse it as Garp and will go his own way with Tashigi.
2. Momonga... Out of all VA (besides Garp) he got the most screen time but still I dunno if he is even close to the admirals. And I doubt he would evolve that much over 2 years... he is already an oldtimer
3. Call me crazy... But Magellan! Yes it's right... Magellan is a beast and still unbeaten by anyone besides being gang-banged by all the level 6 prisoners. He owned the whole BB crew in an instant. He put Shilew in prison and even level 5 and 6 prisoners were scared of him as hell. Jimbei called Luffy to run and even a cocky Croc was running and not confronting him. Iva, who could stand his own against Kuma, were owned as well. And after the Luffy incident he may want revenge and he would be pretty useful for the marines being at the NW and not in ID... ID was empty after the arc and all the high calibers are gone. Even if new prisoners came to it, I expect someone else like Hannybal could take his place for some time. His fruit is one of the most dangerous around and even compareable to logias. I can't see anyone besides some DF users or weapon wielding users beaten him with this abilities and without antidot. His Hell Judgement would be able to pulverize weapons as well. Dunno... But I would love to see him again. And Green Venom as name would fit him
4. No one will be a admiral and the new FA will be still in action like the others but just in charge