1. we already had percabeth in tartarus, we truly did not need this storyline again. i wish nico and will got to do literally anything else. 
2. somehow despite this book being nearly 500 pages, it felt like there was not enough time to deal with all of the things this book wanted to tackle with the respect and time they deserved. 
3. i can't believe i've spent 20 years in therapy when the solution to ptsd is to just take all your trauma memories and make them into literal demons???? fantastic writing.