It would be like what we have now, but instead of you unhiding "all replies," there are short previews under the main topic of user replies, and you click on the one you want to view, which drops down so you can see the full reply. This would allow room for users to post images in replies to topics as well as allowing them space for signatures or other stuff, but mainly, it would function as a way to "separate" replies so they're easier to read.
Oh! Oh! I also had Strawberry Cheesecake Pancakes at IHOP this morning!