considering they hot fix buffed shaman heals by 20%, i think this is blizzard just not giving a shit anymore.
They buffed Healing Rain, Chain Heal (when was the last time you've seen a Sham cast either in arena?) and the proc from their weapon enchant (small HoT). The sky isn't falling.
As far as the totem goes, i don't specially mind but at this pace they will be more durable than Hunter's pets.