>>35825154>Jotaro is more of a Jojo in Part 4 than Josuke.jotaro actually works in part 4 *because* of josuke. p4 jotaro is where araki realized that you dont put the "epic stoic badass who says little" as your mc unless you tailor the story around it. part 3 is hugely boring at the start because you have proto-giorno going "yare yare daze" and just brute forcing obstacles. in part 4, he can hang back and teach josuke and koichi shit, as well as introducing stands and situations where he cant just throw SP at the problem and win (sheer heart attack)
josuke doesnt have a big character arc or anything but his personality makes him a very strong character to base part 4 around because its basically a slice of life and the events are, superficially, a series of vignettes instead of an obvious thoroughfare to get to the final confrontation.
unlike giorno, josuke actually expresses emotions other than "Determination" and has different wants and needs instead of just a singleminded autistic goal of "beating the bad guy". he has different dynamics with the other characters that arent just "you dont like me" and "we are in the same group" and "you are higher ranked than me"