As Sam has said a lot of the functionality is there. Though I thunk it is in part conditioning and akso exposing features that can make things easier
Fpr example a fairly new site setting puts an Arrow on the left bottom of a post with a number. When clicked it hides posts save those that are. related to the first post you clicked on.
This is handy not only for the member but also the mod team if they want to split a topic…However may need an option to insert posts later if the respondent used the bottom reply button vs the post reply.