Clearer thread view showing latest replies without extra clicks

Modernise the Discussion Threads experience, which is currently clunky and old school. Pain points: the original message does not show the latest reply, only one reply is shown, users have to click onto the thread to interact with it at all, they have to hold to reply, and it is not clear if there are more messages. It is not fast to use or clear to see things like the latest message, the last few messages, or where there are more messages, and it feels quite like an old forum. Even Feature base, who hosts this feedback, has a much better threads experience. This makes users less likely to want to use the threads.