Polygon breaks the changes down on a card-by-card basis incredibly well. Blizzard says that "careful consideration" went into these choices, and that it was based on both the company's own ideas and checking out community feedback. So, chances are that the developer is listening to what you have to say regarding the new expansion. Just remember to keep polite when airing your thoughts, okay? You can grab the expansion from the in-game store across all platforms next Tuesday.