It's amazing that people are still predicting zoro vs king. It's dead guys
sanji vs king.
Zoro and the 5 of course stay on the roof, any of them leaving now would be absolutely ridiculous. They stay there and fight til they drop or win.
Drake + chopper vs queen.
Marco gets snubbed somehow by perospero, queen king and co. Or he joins the roof for a bit and heals the guys up a bit. Him being under the dome is a massive crutch that needs to be dealt with.
Carrot gets revenge on peros with help from someone.
Inu barely loses against Jack, and yamato gets to flex on a almost beat jack. Then makes it to the roof to do something "minimal" she might look good for a hot minute but It's gona be clear that she ain't on that level(not saying she will be unimpressive but she won't be a major factor in the fight) , but at least she will witness kaidos defeat.
Kanjuro vs kinemon is obvious.
Raizo vs fukurujo
Orochi vs rest of the scabbards I guess. Denjiro is the main player in that fight. We need him to reveal his betrayl, reveal hyori being alive and being oden daughter to him and all that shit. And he needs to cut him down after having to sit beside his scum ass for years.