Why Must Read Sonic the Hedgehog Encyclo-speed-ia?

This is more or less a history lesson on the Sonic franchise. It's a very thick book, but most of the information contained inside the book is just not very interesting. I was hoping for it to be more of an actual encyclopedia on Sonic's rich world and characters and history both in and out of fiction, and in other media from the games, with lots of illustrations. But alas, this is a very thick book that is mostly maps and screenshots from the video games, and only the video games. Other media is touched on very briefly, and it's very selective about which games it gives extensive coverage of. There's not much artwork to speak of and some of it is oddly flat. A lot of characters get barely skimmed over. Some characters don't even get any art. Eggman Nega appears to be represented as a screenshot from Sonic Rivals. If you had questions about the Sonic series, this book isn't really going to answer any of them unless you're really inept at using search engines and wikis. Only buy this book if you're a die hard Sonic collector and can't pass on another shelf item that you'll barely examine for more than a few minutes every few years. But if you're sensible, either wait for a huge price drop ( I got it 10 bucks off of it's MSRP ) take a hard pass. Everything in this book is already pretty well documented and this book adds nothing new, it just manifests it into physical form in a not very exciting way.