It'll be interesting to see where enhancement and windwalkers are at. Enhance gaining stormstrike at 20 along with getting wind sheer back and earthbind totem to escape with. I can see horde shamans dropping the scorpid totem first in an attempt to fake out those that would attack their totem. I feel like WW monks will be using disable to get away from survival hunts and heal quite often, but FoF is a beast of a spell, even without the stun.
Arcane will be the ultimate glass cannon and boomy will gain swiftmend along with dash. I'm honestly thinking boomy will be the best ranged class to deal with survival and with the meta changing. IIRC, locks are losing soul leech which may be just enough to make them unable to cope with the burst that will now be more common in the 20-29 bracket.
Rets of course will be the best melee counter to survival hunts.