Very intersting question was raised. But, what is "dream team"?
Fastest in terms of lowest downtime per pull can mean:
-heavy CC which lowers dps and makes whole run longer but safer
-sustained dps only setups that can be risky, but based on "no mana" users so faster when considering longer dungeons
-full prep, high burst, low/no CC setup for skilled teams, impossible for casuals, very fast but very risky
Fastest in terms of low wipe risk can be:
-heavy armor/high mitigation setup that saves time by not dying/not losing 1-2 members per fight (which lowers dps and adds resurrection plus mana drinking time)/corpse running
-moderate CC setups that save time on corpse running, but lowers dps
-hybrid heavy, where low wipe chance is provided by 4-5 team mates that can either switch to tank or heal mid combat, where overheal can cover low dps or bad gear
Each "dream team" have its solid purpose.
Majority of people have the time, but dont have the will to buff-up-to-the-teeth for anything. And often they cannot pull tournament level teamplay, when playing after long day at work. Or stoned
Also, same majority will quickly find out that making gold by dungeoning is pretty effective timewise. Better than fighting for hours on the farm spot with a small chance of a particular drop. More entertaining than playing Auction House. With bigger chances for BoE epics. Because of that, 5man speed dungeoning will evolve fast.
I personally think that "dream team" will be determined by the number 5. If your setup can pull 5 heroics in one evening and everyone gets his primal nether, it will be a "dream team". OR rather "dream meta"
2h Ret/prot spec
Ele/resto spec
mage
Warlock (or leather for gear spread)
Warrior
Start as prot and resto then switch to hybrids as you reach burst levels which allow you to instagibb one to two mobs within each pull.
5 frost mages
Well i am going to be a druid tank so.
For an healer, cant go wrong with an shaman(no pesky shield to mess with me )
For dps, not a lot is going to do a lot for me, But A mage for sheep, An Hunter and Warlock
- OR insted of a resto shaman, maybe an priest is fine so they dont steal my leather
For speed clears?
Prot Paladin
Resto Shaman (interchangeable tbh)
Fire Mage/Lock
Fire Mage/Lock
Ele Shaman
For actual loot distribution, it gets a lot more complicated.
Prot Paladin
Resto Shaman
Warlock
BM Hunter
Random non-Shaman melee
The only thing that's a guarantee is that Paladins are the best 5-man tank, hands down, not close. Beyond that, you have a good amount of choice.
It also really doesn't matter that much, because unbuffed Heroics are not very difficult assuming you have the Prot Pally for aoe threat.
Bear AOE threat is absolute dogshit. Easily the worst of the 3 tanks, especially for snap aoe threat (aka every 5-man pull). Unless you have 10-12 GCDs to stack Laverate on multiple mobs, you will not keep up with real AoE DPS. Swipe threat is abysmal in TBC. You also lose out on Blessing of Salvation unless you bring a Holy Paladin, which means your threat is even worse comparatively.
Threat is everything in TBC 5-mans.
I tanked 5 man normal and heroic on my druid alt for fun. Zero issues at all! Your own heals ticking on you, to shout/swipe/thorns/taunt/stun/ you can even ranged damage them and charge.
You realize bear tanks where so broken OP, blizz had to add a debuff in SW so they could get hit!
Its been a while I'm sure I missed a thing or two on how to pull ..
Fastest clearing 5man group:
prot pala
lock
lock
frost mage
resto/ele shaman
This shows how meta slave the wow community is, assembling teams for content as easy as tbc dungs xd
I remember CC being nice to have, but with the way classic went im sure the meta will be AOE zerging everything
Tank - Prot Pala
Healer - Priest/Shaman
DPS 1 - Hunter/Lock/Ele
DPS 2 - Mage
DPS 3 - Warlock
Spellcleave AOE will be crazy good once again like in SM/ZF runs.
-K