Are you personally an artist/illustrator looking for ideas? There tends to be a high supply and low demand for 'suggestions of things other people should make'.
I am, but only the beginner.
I also think that the list of such a suggestions will not be “what people should do” list but “what people could do, if they want to help” one.
Which scenes in the book should be illustrated, according to your point of view? Could you share your opinion, because it can help potential illustrators to choose theme and to draw something. It would be great if you can propose several scenes from the book. I believe we should find at least one good moment to be illustrated in the each chapter with combined efforts.
I think the book will get more illustrations if people can simply choose from the list of proposed scenes, and not from the whole book.
If you notice someone with the same proposal you are thinking about, please support this proposal by commenting it with quoting. In this case I can later make a list of proposals with the number of people supporting each one. However, if someone have made several proposals, but you want to support only some of them, please cite only appropriate proposals.
Please also make new proposals as first level comments. Thank you in advance.