[Boardgames] "Thunderstone: Wrath of the Elements" Review

I know I'm playing catch-up here, as I have been these past few months, but diving head-first into the Thunderstone system has been a real pleasure.  Everyone who reads me and has talked with me on the forums knows how much I enjoy deckbuilding games, so know going in that I wear that proudly on my sleeve.  But thus far, Thunderstone's base game has delivered the goods.  So how does the expansion stand up?