[JoshTriplett]

Here's one of many possible improvements: keep track of stories that had to be "rescued" from being flagged to death, and anyone who flags more than one of them loses both flagging and voting privileges.

Here's another: if you had to turn off flagging on a story, turn off the comment-based heuristics at the same time.

Here's a third: rethink the comment-based heuristics, and consider what kinds of discussion you're trying to curtail.