Yes, but they are a bit too easy to split, which means that a good chunk of comments end up getting ignored. I sometimes read the new ones by first reading all

Yes, but they are a bit too easy to split, which means that a good chunk of comments end up getting ignored. I sometimes read the new ones by first reading all of them, and later manually scanning every comment newer than X hours, but it's tedious. I guess a system that would automatically hid old comments (except their immediate parent) might work ?