I appreciate the work! And I hear you; writing is a lot of work, especially if you don’t need the benefits of synthesis it gives the writer.
I’ve cadged some rules somewhere for de-LLMing the text; if I can find them I’ll post a follow up link. They don’t help with structure though - and I think this is arguably the most important bit - taking the reader through a logical progression. I didn’t read carefully enough to opine on your structure, but again, thanks for doing this!