Hi, I'm Addy (she/her). I LOVE Wings of Fire and Keeper of the Lost Cities. I have a very erratic updating schedule, so you probably shouldn't rely on my updates.
My favorite Wings of Fire book is Darkstalker. I also like Darkness of Dragons, Dragonslayer, and The Dangerous Gift. (Even if I yell at Snowfall in my head for the first half of the book)
My favorite Keeper of the Lost Cities books are Neverseen, Nightfall. The guide part of Unlocked is super useful for my fanfics, too.
On book 16 in WoF: Story? Awesome. Concept? Cool. Overall, I enjoyed it a lot, but I feel like Umber wasn't the ideal PoV character. He didn't really have much of a personality and I might have preferred a slight shift to the story that let Sora be the PoV because her character has a lot of facets and details. She seems to have the potential for more character development than Umber.
Random fact: I realized that all the different fandoms use the same incorrect quote generator.
A message: You hate characters that are too perfect, yet make mile long lists of characters' faults ending with "this is why so-and-so is a bad character."; If, instead, you say "Tsunami isn't a hero" or "Keefe is a bad role model," I can better see what you mean, even if I don't agree. Faults don't make someone a bad character, they make them realistic. A character can be rude and reckless if it makes sense for their personality. It might be bad for a character to never apologize, but it's also a trait that makes them unique. Bad people aren't necessarily bad characters. And: Good people aren't necessarily good characters. Let characters have flaws! No one is perfect!