I'm all for unpruning the cool stuff they removed or moved to PvP talents like anti-magic zone, cyclone, some of the paladin auras, eyes of the beast, ritual of doom, etc.
I'm not for unpruning abilities that have no clear place in the game today, if left unchanged from what they were.
From the stuff listed at Blizzcon:
- Raise Dead makes no sense for frost/blood if it summons the same ghoul unholy already has, just on a cooldown and short duration.
- Hunter's Mark makes no sense as it was, a GCD you had to spend before every single target.
- Frostbolt makes no sense for arcane or fire mages. Give arcane slow back, that would be a good unprune! And fire doesn't need a snare.
- I don't want totems as passive sticks you need to blow a GCD on before every single pull.
Now for all these things, if they're reimplemented in name but not functioning like they did before, they could all be cool. Frostbolt could do something interesting for Arcane and Fire, some sort of synergy with their arcane/fire spells that makes it interesting and compelling to use, adding real gameplay. We just don't know what they have in mind.