With a playful and colorful layout, impeccable print quality and a pleasant prose, one can only agree!
It is true that some elements are not extensive as one might expect, but there was a real spirit of synthesis in this book.
Warning, this is a book that deals mainly with different races and the main characters of the universe Roddenberry. This is not an encyclopedia incorporating alphabetically Star Trek (creation, details of franchises / episodes, behind the scenes, production; all this is not treated).