I imagine a rogue would work better tbh, stun locking people in a spot and aoe slow,ms and cast speed reduction can put insane pressue on the enemy healers.
Remember that the first target will be the hunter and hes not exactly hard to kill, while focused by multiple players his damage will be very low. (hand of freedom is an option though)
MS class + 3 casters and a healer works pretty ok but they often rely on ccing one healer and locking down the other one. With all the imunities this setup got way harder in wotlk and is pretty rare but it works good if its played right.
Scenarios i see that is hard goes like this:
You wont be able to nuke like you do with 4 shamans, a hunters burst is not even close to it.
Mortal strike sounds nice on paper but it is removed by hand of protection, most 5v5 carries got a paladin, either ret or holy.
Mortal strike do not counter pain supression and PW:shield.
Pet interruption is not noticable for a healer and they all got counters for it, if you got a paladin with conc aura up you got 0 spell pushbacks. (if you specced 70% less spellpush back wich every above crap healer spec) Even without it a resto shaman counter it with earth shield,priests with PW:shield and paladins with sacred shield and conc aura. I belive barkskin makes druids immune to spellpush backs but im not sure and theyr hotting pretty much.
If this should in any case work the hunter most likley have to be played by another player, if not you wont get anything off with your hunter and he dies faster then a cloth user atm. Even if you kill one a meele team will pressure your hunter even harder then before and most likley kill him aka your left with 3 shamans+your healer while they have one down aswell. This is in 99% of the cases a loss to me since i cant take down anything since even one healer can outheal me if his team mates are decent with silencing and stunning.
Hunters got 2 tools to migate damage and that is a soul link look alike pet talent with 30 sec cooldown that absorbs 30% damage. A good enemy team knows this and gib 20k hp with 0 resillience before you can say "pet". The other is making you deflect all magic and meele damage infront of you(seems to work 360 degrees thought) You cant attack while this ability is active.
Im not saying its impossible but i dont see it as a good solution either as the point is to burst before healers apply pain supression,ns heals etc.
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