I think Karma being invisible is a huge factor. While I understand the idea behind the decision, I think it prevents the community from really seeing what its broader sentiments are.
More than that, I don't want to read all the comments. I just want to read the good ones. Without knowing which comments are good, I read the first set and move on to the next story.
Agree completely. I skim the threads in each post now, which is a shame because I'm sure I miss some good points.
To fix this, I would like to see threads bubble up to the top based on total karma score for the thread. Read the top half-dozen threads and you have a pretty good synopsis of both sides of the topic.