Note/update: Within a few minutes/comments/downvotes of posting this question, I accepted an answer and acknowledged in comments that the hypothetical change mentioned was not a good idea. Over the course of the massive downvoting this received, I've also come to better understand the MSO culture, the role of tags and the role of the FAQ and revised this note/update accordingly. I elaborated on the question a bit as well, but tried to stay true to the original.
I've seen a lot of opinions to the effect that while it's generally a good idea to accompany a downvote with a comment, requiring so would lead to an increase in retaliatory behavior and other problems. I've also seen opinions to the effect that receiving a comment with a downvote is a privilege, not a right.
That said, I'm wondering what the pros and cons are of publishing someones downvote-without-comment rate on their profile. Doing so might discourage such behavior still providing privacy for particular downvotes and therefore not increasing retaliatory behavior. Are there other problems with this that I haven't considered? Is there not a consensus that downvote-without-comment is generally undesirable? I'm really just looking for information/perspectives here. I don't feel I understand the dynamics well enough to actually propose this change at this point.