With the nerf to panther, I believe shamans need a little loving from this point on to maintain its desirability in groups/raids. One thing I can think of is upgrading this gimp spell:
Talisman of Perseverance (Level 69, group buff)
Effect type : Increase Hitpoints by 60 per tick
Duration : 20 min 30 sec (205 ticks)
When cast on you : Your body begins to heal faster
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New Level 70 custom spell (make it drop from a BoT named, Agnarr maybe... so I have a reason to visit that zone lol):
Chaotic Perseverance (level 70, group buff)
Effect type : Increase Hitpoints by 100 and mana by 40 per tick
Duration : 1 hour 3 mins (630 ticks)
When cast on you : Your body & spirit begins to recover faster
Why longer duration? Convenience, so it can be buffed and refreshed together with my other favorite shammy spells: Talisman of Fortitude & Sense.