Factions

This is just to help me remember the target factions I'll try to achieve for my guys (& gals)... Brackets indicate good-to-have. There is also a deliberate slant towards their roles (Warlock and Paladin are to be my mains, raiders, best gear people. Hunter is my farmer. Warrior is my BS/LW provider & Druid (eventually) the alchemy provider.)

Thrallmar
Need Honoured for the key to the Heroic mode for Hellfire Citadel instances.

Exalted includes a nice caster sword (unless I get the dream Greatsword of Horrid Dreams), Blacksmithing pattern for Shield spike, and Leatherworking pattern for +AP/+CSR leg armor patch. 24 slot Ammo Pouch pattern is also available at Revered. Alchemy receipes are available by Honoured.

Warlock - Honoured (Exalted)
Paladin - Honoured
Hunter - No requirement (Exalted)
Warrior - Exalted
Druid - Honoured

The Mag'har
You get to buy a goat at Exalted... There is also a decent Mail head gear and 2-handed axe. At Revered, there is Leatherworking receipe for shaman leather gear, and (useless) transmutation receipe for Alchemy. At honoured is the 18 slot quiver for hunters.

Warlock - No requirement
Paladin - No requirement
Hunter - No requirement
Warrior - Revered
Druid - Revered

Cenarion Expedition
Need Honoured for the key to the Heroic mode for Coilfang Reservoir instances.

Exalted includes a nice caster ring, nice healing off-hand, Jewelcrafting & Blacksmithing pattern for Nature Resistance, Leatherworking pattern for +Sta/+Agi Leg armor patch and the Receipe for Flask of Distilled Wisdom. Revered provides the best viable arrows in the game pre-raiding, as well as the +AP/+HR patch to head armor as well as a transmutation receipe.

Exalted also allows the purchase of the Hippogryph mount.

Warlock - Honoured (Exalted)
Paladin - Revered (Exalted)
Hunter - Revered
Warrior - Exalted
Druid - Revered (Exalted)

Sporeggar
Not many rewards with just a couple of very nice Alchemy receipes at Revered and Exalted (potion to reduce aggro!). There is a nice wand at Revered, but it won't last long, as there are better wands from quest rewards later. The cooking receipe for pet buff food is nice, but available at Neutral.

There are a bunch of decent quest rewards available at Friendly. The quest rewards seems to be very catered for specific classes, Staff for Druid, 2-handed mace for Pally and Shamans (& possibly Druids), Polearm for Hunters & 2-handed sword for warriors. It's an easy quest anyhow. Good to get unless you've got a better Blue from instance drops. At neutral is a quest in Underbog. Decent rewards but nothing too exciting.

When at Exalted, can get the Sporebat pet as well.

Warlock - Neutral
Paladin - Friendly
Hunter - Friendly
Warrior - Friendly
Druid - Exalted

The Scryers
(Will consider for Warlock, Paladin, and Druid only as they are my Scryers)
The caster ring and the superior shoulder enchant is at exalted. Pattern for the epic spellthread is also at exalted. Not much choice then...

Warlock - Exalted
Paladin - Exalted
Druid - Honoured

The Aldor
(Will consider for Hunter & Warrior only as they are my Aldors)
Nice one-handed sword and the superior shoulder enchant at exalted. Patterns for Fire Resist Leatherworking and Blacksmithing culminate at exalted also. For the hunter the green shoulder enchants are available at Honoured.

Hunter - No requirement (Honoured)
Warrior - Exalted

Lower City
Need Honoured for the key to the Heroic mode for Auchindoun instances.

At exalted, nice caster mace for pally (it's has less crit but more stats as compared to the Thrallmar sword), as well as a nice polearm for DPS usage. Flask of Chromatic Resistance receipe is also available then. Decent jewelcrafting patterns at Revered, including one for a Frost Resist neck (if this become necessary). The other alchemy receipe (for Major Shadow Power) is also at Revered. Arcane Resist cloak pattern is available at Honoured for Tailoring. At Revered is the pattern for 24 slot quiver.

Warlock - Honoured
Paladin - Revered (Exalted)
Hunter - No requirement
Warrior - Revered
Druid - Revered (Exalted)

The Sha'tar
Need Honoured for the key to the Heroic mode for Tempest Keep instances.

At exalted is a very nice healing mace & a nice tanking shield. Revered holds the +dmg/+hit enchant to head as well as a decent +spell crit trinket and healing to weapon & ring enchants. Receipe for Flask of the Titans is available at Exalted but Revered holds another transmutation receipe & pattern for Alchemist's Stone.

Warlock - Revered
Paladin - Exalted
Hunter - No requirement
Warrior - No requirement
Druid - Revered (Exalted)

The Consortium
Lots of Jewelcrafting receipes up to Revered, which also has an interesting Ring enchant. There are Leatherworking receipes (looks like for Rogue) going up to Revered. The 18-slot Ammo Bag is at Honoured, as is the Tailoring receipe for Gem bags. Engineering receipe for Seaforium at Revered. The monthly free bag of gems isn't too shabby either... The key to Yor's chamber in Heroic Mana-Tomb will require Exalted.

Warlock - Revered (Exalted)
Paladin - Revered (Exalted)
Hunter - Honoured
Warrior - Revered
Druid - No requirement

Keepers of Time
Need Honoured for the key to the Heroic mode for Caverns of Time instances.

At exalted is the receipe for Flask of Supreme Power as well as the formula for agility gloves enchant. Revered are the Jewelcrafting patterns including one for Fire Resist neck. Will need Honoured for the Drums of Panic pattern for grinding Leatherworking. The tanking head enchant is at Revered.

Warlock - Honoured
Paladin - Exalted
Hunter - No requirement
Warrior - Honoured (Revered)
Druid - No requirement (Exalted)

Sha'tari Skyguard
Not much point to this faction unless I get bored for a flying manta. Looks like I'll skip it.

Netherwing
Same here, unless I get bored to grind for the flying dragon; which does look nice. Maybe I'll do it...

Ogri'la
The only decent thing at Exalted is the caster off-hand. There is a decent +heal cloak for Revered. If I get bored, maybe I'll grind for it... If not, guess will skip...

Warlock - No requirement (Exalted)
Paladin - No requirement (Revered)
Hunter - No requirement
Warrior - No requirement
Druid - No requirement (Revered)