I love the overview you gave in reply to this post. I'd love to read an overview chapter that also talked about the pros and cons about particular animals for the rest of the permaculture system. This wouldn't be the focus of the book, but probably just touch on this latter topic with references for more reading. I want to figure out what animals to use for fiber but also how they synergize with other aspects of the system and produce other yields (e.g., meat, milk).
Also, any writing I've done has been greatly facilitated by breaking it up into smaller pieces. In essence, what I'd like is perhaps the hardest one, though, the big picture integrative one that makes me then look up more detail later in the book. As in..."Oh, cool. So maybe sheep followed by poultry. Let me find out more about sheep and poultry."
So psyched you might write up some of your knowledge!