So what I'm suggesting is to change ancestral healing and even totemic might (let's face it,this card sucks) for a minion/spell that can heal your hero or even characters or maybe make healing totem as it used to be even though it was too strong.You could say "Just add the neutral minions that can heal" but were are talking about the healing of the class and also shamans have a lot of better cards to replace those minion,I only find earthen ring farseer viable in a shaman deck.
The current meta is all about aggro and a deck that's not fast enough or have a lot of healing/shielding can't beat those decks. (taunt can't help you very much cause of silences/removal/mage aggro)
We also know that team 5 wants to have a health meta that's changing,they are even going to do that "adventures" thing they said at BlizzCon so they could help that change happen,but in my opinion they need to balance the classes and remove the useless cards from the with some others,besides "adventures" won't change the tournament meta.So if they want to have an evolving meta they need to add options and answers to some classes in order to "break" the meta and I'm not talking only about shaman's lack of healing,warriors and some other classes have some issues as well.
That was my suggestion and my reasoning behind it, any feedback is welcome.