So, if you can think of something fairly specific that you'd like to see fixed/improved and you estimate it to be a small(ish) task
"Show new replies to your posts." doesn't really do what it suggests. A more appropriate phrase would be "Show threads you have commented in that have new replies" and that's really fine. But there really should be a way to unfollow threads that I am no longer interested in receiving updates about. So they won't continue to show up everytime someone posts a new reply in it. Because I am not interested in some of them anymore. Why should I have to be reminded about them forever just because I made one comment one time?
Before someone says "just click on mark all messages as read" yeah that doesn't do anything. that's not what i'm trying to do. i just don't want to see updates about some threads anymore.