This gives you an idea of what Diablo 3 turns into once you've reached Inferno: Farming Elite Packs.
Blizzard said that they wanted to remove Boss farming from Diablo 3. Rather than farm Mephisto, Baal, or Pindleskin repeatedly they want players to explore the world.
Players, of course, will not "explore the world", but rather run a set pattern of areas with optimal elite pack spawns.
I hope Blizzard abandons this "explore the world" bullshit, and gives us our damn Mephisto / Baal / Pindleskin runs back.