Here's a fun new challenge, create a new One Piece arc that is AS CONGRUENT with canon as possible.
I'll go first: After managing to get far enough away from their pursuers in Tottaland, the Straw Hats who are with Luffy (Nami, Sanji, Chopper, and Brook), along with Carrot, suddenly find their ship, the Thousand Sunny, to be stuck in an eerie fog, not unlike the one surrounding the Florian Triangle… Attacked by a sudden rain of poisoned arrows, Captain Luffy decides to quickly send Nami, Sanji, Chopper, and Carrot all away to safety on the Mini Merry, with Luffy telling Nami to set course for their true destination in Wano Kuni, and that Luffy and Brook, who sorrowfully recognizes the poisonous arrows, will stay behind to hold off their attackers… Taking a hard steer of the ship, the duo of rubber man and revived man end up unconscious, ultimately waking up to find themselves on the shores of a strange, star-shaped island, not unlike that of the mysterious Thriller Bark two years ago…
After looking around for a bit, and almost being bitten by some weird zombie-like people in the inland forests, the two are pulled to safety by none other than good ol' Franky, the Straw Hat's famous shipwright! Along with Franky are Robin and Usopp, with the three going on to explain to Luffy that they were separated from Zoro and Law during an attack by the World Government affiliated Warlord crew, the "Bloody Knight Pirates", on the way to Wano and as such, have been stuck here for a little while with the rest of the Heart Pirates. After explaining the details of how they managed to rescue Sanji from his arrangement on Whole Cake Island, and that he, along with Nami, Chopper, and Carrot have all been sent to Wano on the Mini Merry to meet up with Law and Zoro, everyone briefs a sigh of relief and contemplation, as they all plan what to do next, as the Bloody Knight Pirates are on the hunt, and it looks like fresh blood has just stumbled into their territory…