@ Bandit: Uh, wrong.

Warrior = Health/AP +Sunder
Pally = AP/Armor/Stats +Replenishment
Warlock = Health/Intellect +Spirit from Felhunters, +funky deep Demo buffs, +Replenishment, right? +Teleports
Mage = Intellect + Biscuits, Focus Magic, Replenishment (if anyone raided frost)
Hunter = Mana Regeneration/AP, +MD
Priest = Health/Shadow Prot., +Spirit +Misery
DK = Heals (haha, what?) +Abom's Might, +Icy Talons
Shaman = Haste/Totems
Druid = Stats/AP/Heals +Boomkn Hit
Rogue = +4% Physical Damage (if no Warrior) OR +3% Crit (if no Ret Pally or Shaman), +Tricks of the Trade

Granted, we are low on the utility side, but there are many reasons to bring Rogues - virtually no aggro problems, high survival (Vanish, Evasion, Sprint, Cloak), actually rather ridiculous AoE now (Poisons + Fan of Knives).

And bring the player, not the class doesn't mean make all the classes the same. It means bring good players. You should be pulling 4k on every fight in Ulduar in BIS Naxx gear - there's your invite there.

What I'd really like to see Expose Armor become viable in a rotation. That would be logical, useful raid utility.