#2. Jojolion has these really cute little chapter opening and closing messages from araki, often talking about the theme of the chapter and building anticipation for the next. some extremely good content there, especially the "is he a man of the land or a man of the jacuzzi?" one.
Those actually aren't from Araki (presumably); they're from the editors of the magazine Jojo is serialized in. Apparently including them is common practice even in other publications, because other regular series (like those in Weekly Shonen Jump) have them included too. In every series I've seen that has them - Jojo included - they're removed for the collected volume releases, so I wouldn't count on them making it into the anime.