I completely agree with you, though I probably miss Kist a bit more. Those are the best deaths to have in a novel, though. Deaths with some connections to the Main Character and still some loose strings to tie up. I find it hilarious that Yuki calls him a poser, but I still liked him. But interestingly enough, I liked Nick a bit more, because he's such a lying slinky jerk. I didn't dislike Kist though. I like Ivy less.
It seems like Matalina's sickness was randomly mentioned and for the most part ignored. Jenks: "I'm going to show this to Matalina! That'll get her moving around." <<Uhh, okay? Whatever back to Rach getting attacked lol, I don't expect it to be any other way since Matalina isn't really major, but I'm still surprised.