The less this focused on Ghost (a somewhat tame and unimpressive villian from Book 3), the better it got.
Anyway, this review has more to do with the quality of the Kindle Edition. I presume this will apply to all WotC releases, but reserve judgment there until I check out some of my other WotC Kindle books.
In general, the fonts and readability of the Kindle Edition are fine. The graphics are great. The inclusion of the introductions and dedications is somewhat nostalgic too.
However, I was slightly disappointed to see there was no ToC. Granted, most people just read these books straight thought, but it's not a difficult thing to add and I still like to remember my book has Chapters (not just because some page tells me, but because there is some kind of table also).
More than that, however, was I noticed the book does not track "pages" like some Kindle books do. It only stores location entries. That's never been helpful for me when I want to know how much longer the current chapter is. (in case you're not aware, a book can have thousands of "locations" / paragraphs). I would think since the original books were print books, you could put in page breaks to match the print copy and have some idea of where you are. Or be able to switch easily between print and Kindle. Of course, I know that's more practical for research and scholarly books, but I've just gotten used to expecting these things.