The meat of this episode is turning the fight between Ichigo and Ishida into a big splashy set piece. In the comic they barely fight at all.

Isn't Ishida's Vollstandig just the same ability as that one Shinigami he made fun of in the original Soul Society arc? It's also just Byakuya's Bankai. Furthermore the Yoriuchi scene where she threatens Yhwach with the 2-hit kill weapon is just a direct lift of an identical scene between Soifon and Aizen.