The following requirements are at an unbuffed state.
raiding will not be allowed without the corrosponding gear.

Warrior Tanks:
490 def -- This is NOT negotiable.
HP 11,000
Armor 11,000

Paladin Tanks:
200+ spell damage
HP 10,000
490 def
Armor 11,000

Druid Tanks:
Uncrittable
12,000 HP
415 def
13,000 Armor

Priest Healers:
1250 healing
100 mp5
HP: 5000 Mana: 7500

Druid Healers:
1000 healing
100 mp5
HP: 6000 Mana: 7500

Paladin Healers:
1000 healing
100 mp5

Warlock:
500 spell dmg (all dmg, not just shadow)
5% spell hit
12% spell crit
350 stam
350 int

Mages, Shadow Priests and Moonkin:
6,000 health
8,500 mana (no AI)
550 spell damage
6% hit
15% crit
(Not applicatble for Shadow Priests)

Rogue:
7000 HP
1100[Dagger]/1400[Sword] AP
8% Hit Chance - 126 hit rating
24%[Dagger]/14%[Sword] Crit
two 71 DPS weapons

Hunters:
7,000 HP
200 Intellect
1700 Attack Power
5% Hit
18% Crit

CL, pleases help me add to this database.

Fist/Dagger Rogue:

320+ DPS (MH and OH combined)
1300 attack power
7300 HP Pool Unbuffed
95+ Hit Rating
+25% Crit

Sword Rogue:

320 DPS (MH and OH combined)
1600 attack power
7300 HP Pool Unbuffed
95+ Hit Rating
+15% Crit


That's unbuffed of course