Blizzard Interview - My Collection Hearthstone 2015
Hearthstone already has a large and ever-growing user base that utilizes the Community Section on the Hearthstone website. This section allows users to direct questions, tips, or tricks to other users outside of the game.
I believe that if Hearthstone focuses on the community aspect and allows users to directly communicate with friends and other users through Messenger, it will instantly create more of a community within the Hearthstone website. This, in turn, will drive engagement.
The ability to instantly and seamlessly share a deck with a friend, or even get advice from friends or other users on how to construct a deck or how a card could affect your deck, would benefit all users, from novice to hardcore veteran. Adding this feature would bring everyone together.