I want the card back, but I think I'm going to break my habit of preordering packs starting with this one. Since they announced there'd be two expansions and an adventure every year, I really don't want to spend $130~ a year on HS just for card backs. Especially when I've already got a bunch of cash earmarked for other games this year.
I'll have enough gold saved up by the time it comes out to buy plenty.