So it's finally happening then as speculated?
1st wave - Scabbrds
2nd wave - Supernovas
3rd wave - Momotaro
I was wondering why Oda was having Momo "train" throughout the arc. Obviously a couple weeks of practice will mean literally jack shit in the long run, but depending on how Shinobu's df works it could be the condition that allows Momo to become powerful. Say if it were to take his current skills and develop them to where they would be 20 years down the line.
We could see a grown up Momo wielding ame no habakiri returning to fight alongside Yamao, Marco and Luffy (dog, pheasant and monkey). If Momo gets aged up then there's also potential for Tama too. I wonder why Oda chose to make it permanent? As for whether they'll win or not, I think we're gonna get another battle.
4th wave - Straw Hats
They're all simply in too good condition for them to be finished after what should be the hardest fights in their lives up until now. I think the 4th wave will give us an Oars style battle with the whole crew that culminates in the emergence of dawn symbolising the straw hats will be the ones to bring it in.
Momo will get his crack at Kaido, but the main characters will be the ones to finish it.