Some random thoughts:
I'd add "Does it work?" or "Does it work in current environments, as it did, when it got written?" to the list. And if it works, do the other points really matter?
Aren't you always responsible for your actions, especially when using other's code?
I was assuming the code was behaving has expected. I did not approach this from a correctness point of view but rather from a quality point of view. For me all other points matter we tend to maintain code more than create new code.
Thanks for your contribution
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