The Blue Rose Companion adds a lot of stuff that should have been in the core book. Unfortunately, it's almost all rules and all the added background info is intertwined into the descriptions of other things, for example the Heroic Roles, which give some info in the Background sections.
The Companion is mostly useful for people who think the magic system in the core book is lacking. There are new Arcana, and a Ritual system that makes things like Aldis City much more believable.
Also very interesting are 'Advanced Arcana', new uses of old Arcana. Especially interesting are ways to prevent telepathic characters from snooping other's minds without consequence.
The extended Bestiary add's Blue Rose specific information about the OGL creatures as well, which helps using them in the right context.<br><br>
<b>LIKED</b>: Art and Layout are of the same quality as the core book. As a line extension, this is a great product.<br><br><b>DISLIKED</b>: Too many rules, not enough background.<br><br><b>QUALITY</b>: Very Good<br><br><b>VALUE</b>: Satisfied<br>