Both parts of this feature are already possible with the existing system. You can already modify a reply after it's been posted. If you really truly need to see if someone's sneaked in a reply before you, keep a copy of the question in a separate tab or window and reload it right before you submit.

Better yet, take a deep breath, go for a walk, and repeat to yourself "It's not a race. I'm still a good person even if someone else posted the same answer a minute before me. I'm a beautiful and delicate snowflake."

In reply to Re: Last Reply Time on Preview Page by chromatic
in thread Last Reply Time on Preview Page by artist

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