I really wish there was a feature in HN that didn't let you delete a comment after a certain time, or maybe just after it had been up/downvoted or been replied

I really wish there was a feature in HN that didn't let you delete a comment after a certain time, or maybe just after it had been up/downvoted or been replied to. It makes a lot of conversations hard to follow when people delete their comments in a fit of pique after they get downvoted, and I have to guess what the replies are in response to.