The pirate - minks - samurai alliance is quite packed : the 3 captains , the 9 scabbards, the 9 straw hats , Killer, Bepo, Sicilian, maybe Hawkins (don't think he will be an enemy) maybe X Drake too when he will switch etc
I think the F6 can have their own solo fights
There can be previous clashes but I don't think WsW and Sasaki will be warm up fights.
But maybe the plot will decide otherwise.