It's been a while, but I'm pretty sure there's more going on in A Killing Frost than minutae of elvish law.

Most recently read Sanderson's The Lost Metal, which I enjoyed even if I'm somewhat annoyed at his plotting. This one brought the story more directly up the wider Cosmere, which makes me wonder if I need to read more Sanderson Cosmere books that aren't set in Scadrial if I really want to understand what's going on.

I read The Hollow Places a while ago. It's a good whatever it is.