At first Zou was skypiea 2.0, with the recent chapter it felt like water 7 2.0 because of the water.
Sanji may have gotten captured and taken somewhere, the new bounty of wanted only alive feels like foreshadowing of Ennies Lobby 2.0 which will lead to Wano Kuni which is Thriller Bark 2.0(Ryuuma's grave/birthplace,Kaido etc).
Oh and let's not forget when Blackbeard beats revolutionary army or atleast Sabo, captures him and sends him to the marines we will have Marineford 2.0 with Luffy using the Vivre Card to search for him just like he did with Ace.
Sanji may have gotten captured and taken somewhere, the new bounty of wanted only alive feels like foreshadowing of Ennies Lobby 2.0 which will lead to Wano Kuni which is Thriller Bark 2.0(Ryuuma's grave/birthplace,Kaido etc).
Oh and let's not forget when Blackbeard beats revolutionary army or atleast Sabo, captures him and sends him to the marines we will have Marineford 2.0 with Luffy using the Vivre Card to search for him just like he did with Ace.