Personally, there’s alot about AZ that’s worse (imo) than TA was. The biggest of which is the lack of threaded conversations. It makes replying to people a much less precise activity and it has really put a big damper on my activity on the site. Mostly, I just come for Reg’s Sunday School these days.
I, too, wish we could display nested threads, although not as much as I use to wish. AZ “flat” style presentation is more linear in time, and much easier to follow when all one wants to do is catch up on what’s happened since they were last here, in an overview kind of perspective. The one thing I hated about some nested sub-nested threads (and sub-sub-nested threads and so on) was how they so often got repetitive, argumentative, and maze-like. But yeah, good threads remained non-repetitive, civil, and followable.
Meanwhile, I use the technique we see in this thread (at the top of this reply), which is to highlight (i.e. select) the text in someone’s post, then click on the Quote button to highlight and respond to that particular part of the post. We can also alert a member to any post, like this: @mattclerke .
(I expect to learn more about WordPress and browser plugins that could help. A more graphical way to display how posts link to each other and highlight which posts one hasn’t read yet may be ideal, improving on both AZ and TA type threading styles.)