The present blog layout is better than the old in some respects and worse in others, but on the whole, I prefer it.
My biggest problem with the new layout is following the structure of a multi-layered thread. Once the thread is 3 or more layers deep and the original comment is no longer onscreen, the only way to identify which comment is being responded too is by judging the size of the left-hand margin. The longer and more multilayered the thread, the more difficult the task. It’s almost a relief once all the layers have been ‘used up’ and there is no reply button.
I don’t suppose there’s an option in the layout which would add some sort of ‘depth indicator to a nested comment? For example a number of vertical bars in the left margin corresponding to the layer depth.