I have seen several cases like the following: if a problematic question has score −3, it will eventually be closed, whereas if it reaches score −4, it is not closed.
This happens because questions with score −4 or lower are not listed on the top page. This means that if a question reaches score −4 before it is closed, it has extremely low probability that it will be closed unless someone with the access to the moderator tools look through the list of questions with close votes. Those who have the access to the moderator tools are the moderators (currently three (yay!)) and the users with ≥10,000 rep points (currently none).
This seems unbalanced. Should we care? If so, what should we do?