Why are comments hidden by popularity and not by chronology?
When I'm reading the unhidden comments, half the time I have no idea what they are talking about and then I have to show all to figure it out. If the comments were chronologically hidden, displaying the oldest comments first, then each comment thread would be clear.
I know people are immediately going to say, "It is a feature!", but I think we'd be better off without it, regardless of the few situations where it would be useful.