Agreed, would be very nice.
Within each topic, I'm interested in seeing a threaded view of posts in that topic. Here is a markup.
Adding the option to toggle this on/off would be in Admin/Settings/Posts
I have several older/grumpier board members that miss their old ubb.threads and want to see 'who has replied and in what order'. Similarly, those same users would want this threaded type view of each Topic on the Home page, however I am currently force feeding Magazine layout to see if I can convert them at least a little.