That seems like something that has been needed for a long time; sadly, I've moved on from Hearthstone as my free-time dwindled.
I was telling my brother-in-law recently that Hearthstone always was kinda bothersome in that with limited time and unwillingness to spend a ton of money, I couldn't play the way I wanted to. For a small time I spent enough time that I had 2-3 good decks and had a good time playing. But then my free-time decreased, new expansions hit, and I felt like I was relegated to a casual version of the game.
I mean, I suppose that only playing a few times during the week is most people's definition of casual. But I wanted to have intriguing matchups with well thought-out decks and was disappointed that that experience was simply not available to the occasional player.