What do you want to be able to customize?
naish: I'd like to be able to flag/mark a particular post so that I can continue to follow the comments that are being generated after it falls off of the front page.  This would also help to parse "important" posts from those that have simply been visited.  Along with this, it would be nice to be able to then unflag/unmark the post once I've followed it long enough.  The unflagging could also be done automatically, after some period of time defined in my profile or per post.