I was surprised they spend so much time making sure that we knew Ferdinand killed Arno. Arno was previously bullying Fran, and Arno was the reason why Ferdinand didn’t respond to the attack in the temple more quickly. So, it’s sort of important to know that Ferdinand can be this ruthless to commoners, and how little grey priests’ lives are worth, but if they just mentioned that he was replaced with Zahm, I still think it would still play out similarly to the audience.