Great Expansion, I love it!
I already read the beta (and my name is in the Special Thanks list, for proof reading).
The guides on magic, suspense rolls, madness, and corruption help immensly in understanding how these are intended, and are a great guideline for any GM.
These were much needed, and are much appreciated now.
I liked the descriptions of the locations a lot.
They were invenvite, and full of cute little details.
When I read about certain NPCs, I immediatly thought: Wow, I must make a adventure around that. Velvet Dearheart, I am looking at you.
There are several highlights, I just pick one as an example:
The Dice & Lock Casino.
In some other RPGs, high level PCs can invalidate a lot of defenses with a single well chosen spell. Some people think in world, people should be prepared for that. Or otherwise, there are contrived reasons why this straightout doesn't work.
The description of the security preparations for the casino is great:
It includes protection against magic, but crafty PCs might still use their Magic if they are inventive enough. So there are still ways to overcome it, it's just not easy.
New antagonists are introduced, and my personal highlight were the Mimics:
It's not just chests, but also cutlery, chairs and tables.
Mimics are some sort of predatory animal, which evovled in the city and adapted to it.
I quite like this, and I intend to use them.
I rate it 5/5.