I've been meaning to make a post about how the structure changes from one overarching goal (ala Dio in Stardust Crusaders) to a bunch of short term goals.
IE
Part 4: Jotaro comes to town to find Angelo, they learn about Keicho and the arrow, then when they defeat Keicho RHCP steals the Arrow and they need to find him, then they have a few merry adventures until Rohan and Koichi stumble upon hand alley and learn about a serial killer lurking in Morioh
Pretty much every part follows this formula of short term goals now, except for Part 5 which has a goal determined from the start (Kill the boss) but is still peppered out with tons of short term goals.
Initiation into the gang, get Polpo's treasure, find and protect the boss' daughter, get the key for the turtle apartment, etc.
IE
Part 4: Jotaro comes to town to find Angelo, they learn about Keicho and the arrow, then when they defeat Keicho RHCP steals the Arrow and they need to find him, then they have a few merry adventures until Rohan and Koichi stumble upon hand alley and learn about a serial killer lurking in Morioh
Pretty much every part follows this formula of short term goals now, except for Part 5 which has a goal determined from the start (Kill the boss) but is still peppered out with tons of short term goals.
Initiation into the gang, get Polpo's treasure, find and protect the boss' daughter, get the key for the turtle apartment, etc.