I won't go into detail because it could be a spoiler, but...
In JoJo, there are so many things that are used as an opening direction using settings, characters, and stands.
When I see the opening change or the directing applied in an important episode, I really appreciate it lol...
Personally, I really liked the directing of part 4.
It's not that Part 3 or 5 wasn't great... Anyway, it was the best.