I've found something I DON'T like about this new setup.
I DO NOT like a thread moving to the top when a new post is made in that thread.
I DO LIKE being able to log on and find the new threads listed in descending chronological order, newest at the top.
I don't use the flat, collapsed view that has been repeatedly recommended by fellow posters as I like to be able to see who posted in each thread and not have to open the thread to see who has posted today.
So, that's the first real complaint I've made and I hope it's the last.