Ask HN: edit history for HN comments?

I've noticed a couple of incidents recently of people editing their comments to preemptively respond to replies, and in some cases completely change the meaning of comments that had already been replied to, rather than continuing the conversation. I can't help but feel that this is a dishonest tactic of discussion, one that drives away those who aren't looking to score points. At one point a comment that had been edited was marked with an asterisk. I also seem to remember that it used to not be possible to edit a comment once it had replies (I am not sure on that). And there has at various points been an informal practice of adding a tagline when an extensive revision was introduced describing the reason for the edit.

I know there is a timelimit on editing, which limits the scope of historical revisioning.

Would adding a history of edits to a given comment make egregious revisions less likely?