[guelo]

So each bad comment would require a large comment thread? Seems like the opposite of what you'd want.

[Dylan16807]

It could be displayed much more compactly, or not displayed at all to third parties.

[ibmthrowaway271]

A way to give feedback to the poster on inconsequential details such as language/spelling/typos/grammar/etc that isn't displayed to anyone else would be useful.