Things Livejournal Should Invent: Expand All Threads button

In LJ, if there are over X comments (where X might equal 50 or 100, but I'm not sure), it collapses all the threads so you can only see the first comment in each thread and have to click to see the replies. There's now a handy "Expand Thread" function so you don't have to click and wait for the page to reload, then go back to the main post to read the next thread, but you still have to expand each thread separately. I'd very much like the option to expand all the threads in one click, because most often I'm interested in seeing all the comments.