I think there are a lot of valid alternatives as to how takes are organized. What is unique about the script layout is there is no need to do a search or other operations as it can be done at a glance – I can look at the script and see what coverage is available for any given span of story. This can be further refined with indications of dialog being spoken on screen, or off (or from the back), color for preferences, etc. Once edited, there is a script matchback (like matchframe) that from the event in the timeline goes back to the script and highlights take and span used for alternate choices. And without PhraseFind can be used as a text search for action, scene, dialog etc. to make the story work.
There are many more things this interface could provide if Avid was committed to the interface with or without phonetic sync (which is huge, but still a supporting player).
Speech to text (ala Siri) and such get you to a transcript which could then get you aligned, but that technology has been hit and miss for decades and Adobe even removed it from the product. It’s amazing how much 80% accuracy is still a pain to work with.
Michael