My personal future matchup predictions:
Reguarding Beast Pirates:
- King will for sure have a clash with Marco, but probably nothing more. King will fight with Zoro or Sanji (whoever takes him, will then go straight to sleep) but I lean more towards Sanji, while Zoro goes on the roof with the captains
- Queen, just like King, has some possible opponents in front of him: Sanji or Zoro even here or Drake which has an unsolved business with him
- Jack and WW, for now the second has been placed against Jimbe, but there could be a switch with Killer (in both cases these 2 will defeat the Calamity/Tobiroppo and then give some support to their captains against Kaido/Big Mom)
- Sasaki seems set for Franky
- Black Maria is with Sanji but will not last long, Robin will take her
- Ulti and P1 will be probably tagged 3v2 by Usop, Nami and Chopper
Reguarding Big Mom Pirates:
- Smoothie, probably someone like Yamato (but I'm pretty uncertain tbh)
- Perospero we know is fighting Carrot and Wanda, but they'll not be enough. Brook will fight him once they are defeated
- Snack, don't know
- Daifuku, don't know
There are also 5 Numbers (I'll give at least 3 of them to Bepo, Shacci, Penguin, Heat and Wire)
Hawkins must be set somewhere