I have to agree that Gojou's arc is probably the best arc in the entire series up to this point, but can it still be better?
First of all, I like how Suguru's character was developed. How he started with believing that Shaman should protect the non-shaman and in the end turned the entirely opposite way.
Suguru's story involved decision making.
"The person you want to be, just choose one and stick to it."
He made a decision and therefore he stuck to it even if it meant he had to kill his own family.
This part will be much better if we get to see his conflicts in the process of following his decision. The Suguru that was portraited before wasn't a heartless cold guy. He was quite considerate and had lots of thoughts. A character like this, I think, cannot suddenly turn into a brutal person who killed his parents and a lot of innocent people without a conflict. Especially, when not all non-shaman is jerk-like people.
If Gege can explore further on this point, it will give the character much more depth.
Then, we have Gojou's story. I like Gojou's ending a lot more since it showed what he had learned through his action "go help someone who is ready to be helped" (in this case Fushiguro). However, the part before that was quite unclear to me. What was Gojou's original ideology? "The Strong rules"? Did that ideology change? What did he learn after fighting with Fushiguro's father?
What do you think?