1) Toot-toot will probally be one of the most present sidekick for Harry on the book, in the terms of helping hima round Faery and etc, together with Lea and Sith who should also give Harry some tips on how to act on Winter. But I think that for the blow everything moment, Harry will recruit some of his old friends. I'd say Thomas & Molly and Bob probally.
2)
a. Butters. He might not be the first one to actually see Harry. But I think that there is a big chance that he figured out Harry is not dead. Especially if the info about a new WK reach him. And if Bob return to him or not.
b. Harry will quote Gandalf the White.
c. As an individual, I'd say Molly as a group/entity, The White Council.
d. Molly reaction will be the most touching, althougth if he reveals himself during a JLoC meeting Karrin's reaction should also be good, I think she would go in to shock.
3) The Winchester will probally his new "destruction toy" but I think we gona see that his mother ruby will prove much more usefull on general during CD.
4) Not sure who the immortal gona be, but he will be related to the Black Council and participated attack on Artic Tor. I'm thorned between Thorned (pun intended) and that imortal guru shapshifter from Ukraine
5) How to complete the quest Mab gave him. He will be faced between doing what she asked the easy way, giving her what she asked, and doing it his way, also acomplishing her objective. Ie: Prevent the groofs from bothering her Trolls on the border, easy way kill them, hard way negotiate some kind of deal and end with more obligations..
6) Harry will meet fix in a situation that will be obvius that Fix could kick Harry ass due ot his experience as SK and Harry relutance to hit a friend, but conflict will not happen at that moment, at least fully. Another conflict may rise later on the book or a next one where Harry will kick Fix ass.
7) We will lean the true, or most of it, about the attack on the artic tor and some of the BC objectives.
We will discover that the reason Mab emprisioned Lea is because she was possed by an outsider and that Mab orquestred many of the events on PG to bring Harry to the Artic Tor and hit Lea with his outsiderbanish on the fountain, weaking the entity giving Mab the advantage she needed to heal Lea. But she didn't forsee him using Summer Fire.
We will discover that it was Mab who fixed LC, probally filling up Lea obligation.
9)
Harry will get punched by Murphy.
We will discover what Happened to the Bob/Evil Bob fight.
We will meet the Gruffs
Some new information about the Parasite will be revealed, Harry might realize that is Lash who is back but I think the realization is more likely on the next book.
On another subject, I should get extra credit for not having read the 2 CD sample chapters. I mean I'm on a disavantage here.