Idea: Create echoes that trigger for people engaging in direct conversation, or watching. Use the same system we have for performance. Echoes could include, "Joe Baka's argument is compelling.", or, "This blank has no tact."
This could inform players on how convincing someone seems to come off in conversation. Make stat checks for this include some combination of perception/intelligence/charisma/artistry, and it becomes a contested roll between the relevant characters in the room.
Stats closely related might turn up neutral echoes or none at all, showing there's no indication one way or another.