With the steady turnover in sovereigns for the top spot in Thrune/Cheliax, I wonder if anyone important in Egorian even has recollection of the deal with Ilnerik? Perhaps that is why he threw in his lot with the Council? I figured by design that the shadow beast terrorized enough to keep people off the streets to dissuade rebellion and humiliate Westcrown as sought by Thrune and to later allow more freedom to act for the Council. Going into the people's homes might raise too much dissent or force too much of a response. I see their use mixed between being random enough to enforce the "curfew", but targeted when needed to keep attention away from specific Council operations.