Re: Memories of Ice...good grief!
I'll start with one of my homebrewed SPOLIERS ABOUND tags.
Finished my re-read of MoI at Uni, and there were a few things I picked up on, which I can only put down to a slower re-read, and knowing more about the world from later books.
One of the main things was a revelation about Otataral - Trake, I think it was, somewhere in the first 200 pages (137 springs to mind), makes an offhand thought about how he helped create the otataral desert. Interesting, I thought.
In HoC (more SPOLIERS ABOUND), it is postulated that the Otataral Desert was created to bind the Jade Giant. I'm going to leave the discussion here, as it'll probably get out of hand and move from MoI subjects. I imagine that Dust of Dreams will have a lot to say about the jade giants, judging from its prologue.