I managed to get this book finished last night.
I do feel you are giving the reader a slightly different angle with each book. At the same time I would say it's a little frustrating too, because there is info dropped into each book about The Choosen One and the Darkweaver amulet, but we get sidetracked onto what is happening to some of the other characters.
Such as, Bek and Jez been sent to the arena in this book, and the majority of the story focusing on them.
Of course I seem to gravitate towards the magical element of stories, so was eager to know what Selkor was up to (and we only briefly touch base with him in this book). And also Perdimonn's attempts to get to the Key Warders before Selkor. This part of the overall plot (for the series) is included, but not as indepth as I wanted to know about. For me this series is about the power/magic of the darkweaver.
However, there are other storylines. So yes I would say that each book does have a slighly different perspective on the overall series.
I think out of all the books so far in the series, this as to be the most frustrating (for me)
I did enjoy Bek's trials in the arena, and thought the fight scenes were well written. As I've already mentioned, I did think about The Gladiator movie whilst reading about the arena. Bek's winning over of the arena crowd, his skill against the other ranked fighters and the relationship he built with the other fighters - all reminded me of Gladiator. I started seeing Russel Crowe's face when reading about Bek
As mentioned, I personally would have liked to explore the magic of the darkweaver, and how it was affecting Selkor.
I felt Calvyn's time with the Magician's Guild was also a little frustrating,, and never really got anywhere.
The ending leaves things open to finally draw a few loose ends together. I'll be interested to see just how the magical side of the series is dealt with