[fkfkno]

To take this idea one step further, each of those options could be attributed to a colour value. Then, instead of "greying out" the resulting comment would be an amalgam of the received votes, giving an indication of exactly what it was in particular that caused the comment to be downvoted. The stronger hues would then indicate a degree of consensus among the audience.

Of course, the same should be applied the other way, so when upvoting, one could also choose to assign a value for "this is good but could be improved", "I have a different opinion, but the above comment is worthy of consideration", "this is simply a correct take" and "this comment is pleasing to me".

And for the sake of readability, maybe instead of the whole comment being coloured, a marker could be applied before or after unadulterated text so that it remained accessible during the course of this process!

The challenge would be in deciding which colors represent what sentiment, as these days even our visible light spectrum seems to be corrupted by political/moral/tribal prejudgements. So perhaps it would do more harm than good. It may make for an interesting experiment, all the same.