I watched a little of the Dreamhack too. I think watching Hearthstone streams and tournaments is a little different viewing experience from other games and sports. When you're watching baseball, you know you'll never be able to turn on a 97 MPH fastball, or have Kershaw's curveball. You know you'll probably never have the reflexes to be good enough in LoL, or whatever. But you can totally put yourself in a Hearthstone players shoes and play along with them. It can be fun to try to make the play that you would make and see how their play differs.