Tarot Spreads by Barbara Moore

This book sounds interesting to me, too. I especially like that the author gives importance to the layout and design of the spread. I find that a nicely organized spread does make things, well, more harmonious. Aside from that, the layout matters a lot if someone wants to read elemental dignities. The layout's important, because the proximity of cards to each other matters a lot.

In fact, I wanted to ask the people here who've read the book, does Barbara Moore spend time talking about elemental dignities and how they fit into the picture of spread design?

Yes Barbara does talk about elemental dignities in the book.