Don't collapse comments when some clicks reply in a notification.
On the articles with a LOT of comments, I tend to reply to several different posts. But, when I get a notification that someone replied to me, I click on 'reply' in the notification, it takes me to the post in question, and then collapses the whole thing down to the first (highest rated) post, and I have to go looking for the one I want to reply to. More often than not, I can't find it again. I have mentioned this before, but, things have gotten worse, not better. I would like to think your programmers are better than that.