With all the talk about archetypes, I also want to point out that, during beta, most decks where pretty obvious and had little room for variations on an established archetype. This resulted in most decks being exactly the same, which made the game more boring. After Homecoming, we got a greater variety of decks, thanks to the 2 bronze limit and the provision system. That didn't stop netdecks because nothing will, but even in that segment I see more experimentation.
Let's take a look at a few examples from ST. Facing Francesca, is it a double RNR/Muzzle, Waters or maybe the new double Dwarf Justice? All three "archetypes" play differently. Picking Eithné, she can be midrange or focused on Scorch/Igni/Regis, with or without a dwarven package. And Dana can be anything with Waters. The point is, instead of swapping a whole deck around, you swap part of the deck, like the dwarven package.