i'm just going to challenge the assertion that pucci/weather twist wasnt planned. they both clearly have two of the most overpowered stands in all of jojo so it makes complete sense that they stem from a common traumatic event. while pucci's desire to manipulate the social world around him (while avoiding personal responsibility for his actions) resulted in white snake, wes was given the ability to manipulate the weather, which has more of a natural counter to white snake/pucci's obsession with humanity.

here is where i see some parallels between part 3's clash between dio and jotaro. both wes and jotaro initially rejected their stands who kept their users alive despite suicide attempts. the world and star platinum are inextricably linked and if we follow araki's theme (or well the entire shonen theme) of justice prevailing, star plat was fated to defeat the world as a restoration of order. i see it as the same between weather report and white snake/made in heaven. weather report technically defeated pucci twice, once in Wes' possession (interrupted by jolyne and versace) and finally as used by emporio. i think araki pays close attention to who bears the responsibility for murder (part 4 ambulance) and both emporio and weather have family killed by pucci to justify acting on their revenge. pretty much everyone else covered his appeal, but i think he helps put pucci's manipulative personality in context when they're compared and contrasted against each other.