Today, I have seen (and answered) this question on zfs. For me, the question made perfect sense and has been well-researched and well-written. Yet, it managed to earn two close votes where the close reason given has been "unclear what you're asking". No voter bothered to leave a comment.

As I only can see some sense in the the "unclear what you're asking" close reason if specific information is being asked for, I am requesting to consider the following options:

1. request a mandatory comment with this close reason, where the voter would need to specify what information is missing
2. present a big, red "only check this close reason if you are actually familiar with the topic of the question and please leave a comment explaining what is missing" warning box to everyone who is checking the "unclear what you're asking" close reason. Only let the voter proceed if he has clicked the "Yes", "I promise" and "I really mean it" buttons in sequence.
3. remove this close reason altogether