A quick note about an amazing UI from Writefull called Sentence Palette that shows how to combine structured content with prompts to write in a structured way. It nicely fleshes out the granular structure of a complex document down to the sentence level. I see broad application for this kind of approach for many kinds of content.
The deep analysis of large content corpora reveals common patterns not just in the conceptual organization of topics but also in the narrative patterns used to discuss them.
Writefull has assessed the academic writing domain and uncovered common text patterns used, for example, in article abstracts.