Part 7 is going to be really hard to animate

Something i have come to notice in the series is that, aside from the fights. The animation is pretty static, and that makes sense. Since parts 1-6 are pretty static too. Going more for stylistic shots than for actual dinamic movement within panels.

Steel Ball Run is different. While the poses and the shots are still a thing, the art focuses more on movement. Everything in part 7 feels fast, always moving. And that, that will be hard to keep up with.

I think the best descriptor for the JoJo animated series until now is what the Super Best Friends called it: a "Motion Manga". Of course there are high speed scenes like the battle with Wham or (if you're reading from the future) The battle agaisnt Highway Star. Now, take that, and try to make a whole series arround that, over 50 episode series of just that.

It can be done, but it will require a lot of good animation. And good animation cost a lot of money.

Also if you are reading this from the future, how did they called Highway Star? My bet is on Highway Giant Flaming Ball of Gas