Here are some idea’s on how to improve Shaman survivability.
They are not suppose to be super powerful, but they are thematic.
I tied everything into Ghost Wolf, because i personally think that some things need to have a trade-off. Adding additional defensive capabilities might cause a powershift in Shamans elsewhere if they do not make a trade-off like this. Also, Shamans don´t need more buttons anyway.
Soothsayer:
Ghost Wolf removes snare effects. Additionally, your movement speed is increased by 10% and max health is increased by 20% as a Ghost Wolf.
Shift into Ghost Wolf to gain a 20% health cushion, to potentially be able to survive one-shots.
Augur:
While not in Ghost Wolf, you gain Presage every 10 seconds. Stacking up to 4 times.
Taking damage in Ghost Wolf will cause that damage and damage for the next 4 seconds to be reduced by 5% per stack.
The current talent Spirit Wolf promotes a degenerate playstyle of sitting in Ghost Wolf in PvP. 20% damage reduction is more efficient than healing, and the talent encourages you to sit in ghost wolf to gain maximum uptime on the DR.
Augur does the opposite. A skillful Shaman can pre-Wolf incoming damage in PvE or mitigate swaps to the Shaman in PvP.
It promotes regular gameplay, not spending your time sitting in Ghost Wolf to gain DR stacks. It doesn´t activate until you take damage, so Shamans can still use Ghost Wolf for mobility without losing its defensive capability.
Farseer:
Ghost Wolf shifts you into the spiritual plane. A fatal attack that would have killed you will immediately trigger your Reincarnation without death.
If Reincarnation is on cooldown, you die and the remaining cooldown is reduced by 50%
Shamans are considered farseers, they can see what is to come.
Having the ability to predict your own demise, you can shift into Ghost Wolf to prevent it.
Reincarnation is a pseudo-defensive, its a device to prevent shamans from proper defensive tools.
Witchdoctor:
While you are a Ghost Wolf 20% of the damage you take is instead dealt to you over the next 10 seconds.
Another Pseudo-defensive, it doesn´t technically mitigate damage, but it prevents one shots.
Spiritual Barrier:
While in Ghost Wolf, Spiritual Barrier absorbs damage taken.
5% of all damage and healing dealt is converted into Spiritual Barrier, up to 20% of the shamans maximum health.
Do damage and healing, so the next time you shift into Ghost Wolf you gain damage absorption, so you can shift quickly into it if you need to soak some damage.
It has a soft-cooldown, as it requires time to build the shield naturally.