Remove DV links from a person’s “past comment” page unless viewed in context.
(After the recent comment thread dfranke sparked, I lost a large number of upvotes from my past comments, which were previously almost uniformly weakly positively ranked. I assume my previous posts had not suddenly reduced in quality, and that someone had simply decided to go through and punish me. Making people view a comment in context—one more mouse click—would make this unconstructive action less convenient and less likely.)
Do you mean something different from the “Parent” link beneath each post?