The Player’s Guide for the 20th Anniversary Edition of Changeling: the Dreaming kicks off by talking about how the 20th Anniversary Edition is very much designed to be adaptable for your own tastes and needs, and certainly the Player’s Guide delivers on that general approach as far as I’m concerned. Take, for instance, the matter of Banality – truly the Marmite of Changeling: the Dreaming, the part of the system which people tend to either angrily reject (as you’d know I do if you’ve seen my review of the 20th Anniversary Edition and 1st Edition) or consider to be a core part of the experience; I was impressed by the extent to which, to my eyes at least, the Player’s Guide almost never mentions Banality except in contexts where it’s absolutely necessary to, making much of the material here useful to deploy in campaigns where you’re not buying into the Banality idea very much (and equally viable in campaigns where Banality is of supreme importance).
In fact, they throw a brand new PC type in here – Lycians, a particularly persistent type of chimera which are inanimate objects or abstract concepts that are special enough to someone or have enough resonance in the Dreaming to end up with some sort of life. (An example given is a child’s teddy bear who protects them from dark forces when they sleep, for instance.) The sheer range of things which can conceivably become Lycians – a badass car, for instance – this further puts Banality into the background, since if the Dreaming can be expressed through literally anything, then you can no longer say an entire category of thing is necessarily Banal by its nature; it’s only Banal if it doesn’t bring light and joy and wonder into anyone’s life.
Beyond that, you get a grab-bag of useful bits here – stacks of details on Changeling politics (including a deep dive on the Shadow Court), an overview of the Changelings of other cultures around the world, and various other interesting bits and pieces and details. There’s even details of those Changelings who have managed to overcome the tug-of-war between Banality and Bedlam to become effectively immortal, and how you can become one of them.
What it’s most intensely stuffed with, however, is atmosphere and inspiration, which is what you want most for a Changeling: the Dreaming supplement really.