I’m open to particular implementations of particular lines for Ben Solo, although the existing quiet for him works well. Any line wedged in there would need to feel worth breaking the silence.
And I’d say I’d leave it up to whomever wants to work on the milky eye removal. If that person sees fit to give her Sith eyes, fine. If regular eyes, fine. And if that person also wishes to add a flash of Sith eye during the flash of snake teeth, that’d be okay, too.