Maybe it's because it's Beta, but I've only received 2 Daily quests ever since I got my invite about 5 days ago. Maybe it will improve for me once I get dailies every day, lol. Right now i'm pretty much stuck getting 45 wins (45 games minimum, assuming I don't lose at all) ranked or unranked to even get one shot at the arena. I won 6 matches last night in the Arena, and from what I had read elsewhere, generally 5+ victories nets you at the minimum your gold back to play Arena again, however all I got was a pack of cards, 10g, and approx. 85 dust. I was disappoint.
And like I said, I don't mind spending the money for cards, I just don't think most people would want to throw down $50 on cards for a free to play game. Hell, I've probably spent $50 my first night on there. Are they planning on charging for the game itself on release or will it be free, with the current dollar spending options?