After a week and a half of play, I'm irritated about how I have no rares, and can expect not to have any for a long time.
I have had no luck in the arena, and have gotten every hidden quest. My win ratio on a good day is 1:1. Amazingly it's still fun.
If anyone wants to friend me on Hearthstone my name is Jyiber. Feel free to challenge and destroy me, because I still suck.