While I generally agree with you, I think we have to look at it from the moderators’ perspective, too. What are they supposed to do? Deal with the same persons every few weeks until hopefully some of them grow? Moderating a community is already a lot of (often thankless) work. I don’t think adding this would help finding and keeping good moderators.

Ultimately it’s not only about what is the most fair but about what tools are needed to keep a community running.