The bolded is the ONLY thing I want addressed in Wild. I'm even fine with Dr. Boom, comparatively.
Every deck feels amazing until you play it for a few hours. Then the game code turns on you.
I think the idea Blizzard has is this: if you play a deck with a lot of new cards, you are likely to have just spent money. So they want to reward you for doing that by giving you better matchups/draws. Then, after a while, you start to play people who have just spent money, so they get better draws than you while your win-formula drops. Your frustration then is supposed to lead to you spending more money, and the cycle repeats. Since the game is ~50% RNG, everyone has a ~50% winrate unless they make consistently terrible decisions. This leads everyone to be "kind of happy" with the game because they get moments of satisfaction. Then cards like Yogg, etc., are there to push everyone toward that ~50% winrate.
As a source of income, Hearthstone is an extremely well-designed game.
That would explain why every time I make a new deck I go 7-0 at the start.