I think I may have finally stumbled on an answer to the question (which has puzzled me for years) of why the ground crew has had so much trouble coming up with and agreeing upon an effective statement of purpose.
Message #2 of the first Handbook states "You will only rise to the top with a new vision. We cannot give you that vision. The book of Spiritual Laws provides some guidelines, however the vision must be simple to be powerful."
Despite having purchased and read the book of Spiritual Laws a number of years ago, I was not at that time really ready to understand and apply them. I only recently started doing so and I am finding that my mind is being opened to New Paradigm possibilities in a way that it never was before.
I would guess that much of the ground crew has not read this book, and without having done so I can see how difficult it has been for us to get onto the same page with envisioning what the world would look like if everyone were aware of these principles.
You can buy a copy of "The Spiritual Laws and Lessons of the Universe" from George Green's publishing company, but the book is actually just a reprint of Phoenix Journals #27 and #47 which can be downloaded as pdf files here:
http://www.fourwinds10.com/journals/J26-50.html#J027