I disagree. I personally would like to add new dialogue so the Knights of Ren are more menacing and have some gravitas. Below are a few ideas:

Pasaana Chewie Scene (two KoR watch Chewie in the desert):
Knight A: A friend of Luke’s.
Knight B: I get his teeth.

Kijimi Alley Scene (the KoR pause in an alley just after Rey and the gang passed nearby):
Knight A: No sign of her. No one’s talking.
Knight B: Burn it down. Just like the temple.
Knight C: No. Start killing all the women.

Exegol Ben Fight Scene (the KoR confront a weaponless Ben):
Knight A: Let’s take our time with him.
Knight B: Ready to join your father?