New team, new server, all trolls, what classes?

[Svpernova09]

I second Svpernova. If you think its gonna take you a long time to level and you want the all troll aspect at 80, you could put a tauren druid in there and race change to troll druid @ cataclysm.

I'd definitely agree here. IMO Druid > warrior for a tank, the druid just brings more to the table. But sticking with trolls for now, your limited to Warrior / DK. I'm just not very impressed with DK tanks these days, they seem to take huge, unnecessary spike damage even in heroics.

[VonHenry]

I'm just not very impressed with DK tanks these days, they seem to take huge, unnecessary spike damage even in heroics.

^This

I know you have stated you have troubles with Heroics. If you try with a DK tank, you will spend all your focus on ensuring he's being healed, and that won't help you out.

(Source: My main since Day 1 of Wrath has been a DK. Healers hated me in heroics before I was well geared...and even now some ToC encounters, etc are spikey).

[Solon]

While I hadn't considered druid, it is a good idea. The problem I have is this is to be a troll team and I may not get Cataclysm, and I doubt I will wait to make the team until Cat comes out. At this point the common answer seems to be
Tank: Warrior
Healer: Priest
DPS1: Mage
DPS2: Hunter
DPS3: Shaman

What does the hunter bring to the team? My first 60 was a hunter, and I have a PvP team of hunters, but I don't see what they would bring over another mage or shaman.

EDIT: Also, what would you change if my goals were to change to 5 man PvP, such as battle grounds and Wintergrasp.