What would/did you change in this AP?

So my group will be choosing our AP soon and personally I feel like this will be the winner. I understand that the general thought is that Book 2 is really a huge letdown and I wanted to ask some people who have run it before, what you did to try and change it to make it better?

I’m not asking only for adjustments for book 2, if there was something you felt like was a key change that improved the story please let me know. I love the setting and theme of this and want it to be amazing for my group to play through.

Thanks!