What would be ideal is an option to indent and insert replies following an entry so that they were clustered after the entry to which they refer. I haven’t seen enough of WordPress or BBpress etc. to be certain, but I think that reply threading only introduces indentation to nest replies, in the same way that replies are handled for “updates”. All posts would still appear in the order posted. I think it’s the idea that the main thread will always be one topic with replies. Reply threading allows replies that are linked to be picked out to some extent. What we need is a thread with multiple topics. The Cloud had the same limitation which, I suppose, is why the rule was introduced there, and why for short story comps we have a separate topic for each entry.