Character Operations Manual adds some interesting and fun options. New classes, more flexibility with Mystics, and being able to emulate some of the classic pathfinder classes. But overall, this book is way too small. It touches on important things, but so shallowly they might as well not be there. They admitted to cutting content and is absolutely shows. Features from the playtest are missing, some rules and options don't make sense, as if they were built on something that was removed. The equipment section was beyond sparse.
Ultimately, for the price, it's just not worth it. Especially in comparison to both current and older Pathfinder products. Unless they either add at absolutely minimum 40+ pages to future products or drop the price point, these books feel unfinished and overpriced.