In my opinion, none of the above.
Going by what Mythic has done in the past with DAoC and Ultima Online, I'd actually expect this to be a summer campaign much as Land of the Dead was. Maybe no new zones, but a new live event each month with rewards, titles and random things that will go in your bank. I will put this out right now though: there will be NO new playable races.
My live event item has ran out so we're due a new live event soon, this red plague will be the start of an arcing chain, the summer campaign which will take us to different zones etc but please don't hold your breath waiting for the announcement of an expansion or new race. It's simply not viable right now with the clearing up Mythic are doing in WAR.
What it doesn't stop me from doing though is imagining a "What if..." expansion/live content....
I would see a fourth race for each realm, however this is known as "Dogs of War" (for those who don't know much about Warhammer, the dogs of war were mercenaries of various types that could ally to almost any army. The dogs of war wouldn't be shared but would feature a new playable character which doesn't fit in with the other three races. In particular they'd be mirror classes as well. So what would I have for the two classes?
Bonedancers! Erm, I mean.. multiple pet classes. Now Bonedancers in DAoC were my favourite class, being able to summon different types of skeletons for different tasks. You got a slot limit and could fill up those slots with the skeletons. Healers, warriors, archers, casters and the commander (which you had to run). I might be a little flaky on that as it's been a while since I played DAoC. So lets skip the nonsense and bring out my proposal for the "there wont be so it doesn't matter" classes. Both classes become 'unlocked' after reaching rank 40 and renown 40.
Destruction: The Skaven Pack Master
Clan Moulder is one of the four Great Clans of the Skaven. They use foul mutations induced by Warpstone to create their charges of battle. Clan Moulder armies are typically led by Master Moulders and then field Clanrats as well as Skavenslaves as the bulk of their troops. The armies then include masses of their 'experiments' such as the Rat Ogre and Giant rats. These fighting beasts are also sold to other Skaven Clans for the highest price.
Archetype: Multi Pet (5 slots of pets). Physically very weak and must rely on powerful pets
Pet Types: Giant Rat (1 slot - weak melee DPS), Skavenslaves (1 slot - weak ranged DPS (slings)), Plague Rat (2 slots - dots/debuffs), Warpstone Slave (2 slots - medium melee DPS), Rat Ogre (5 slots - Tank)
Trees: Master of Rats (buffs the giant and plague rats), Master of Slaves (buffs the slaves), Master Moulder (buffs the Rat Ogre and the Player)
Order: The Grail Knight
The Land of Bretonnia is a feudal, traditional society where the peasants serve the knights in return for protection, while the knights are bound to militarily serve their lords in return for certain rights and titles. At the top of this feudal hierarchy is the King. Beneath the Kings are the Dukes. Beneath them is another layer of nobility, the Marquess's, the Earls, the Viscount's and the Barons in respective order. The King, Dukes, Marquess, Earls, Viscounts and Barons are also each the lord of a number of Knights, who are the lesser nobles. Each Knight (including the higher nobles) has his own force of Men-at-Arms chosen from the most physically-abled peasants. In return for serving his knightly lord, each peasant is given a small tract of land for his family and can be expected to be called upon for service in times of war. The Knights' forces typically consist of the stronger Men-at-Arms and the more lowly Bowmen levies. The lands of Bretonnia are also ruled by spiritual and mystical leaders, the Fay Enchantress, her Damsels, and the Grail Knights, who are all faithful servants to the Lady of the Lake.
Archetype: Multi 'Pet' (5 slots of pets). Strong and uses weak pets to enhance abilities
Pet Types: Peasant (1 slot - very weak melee DPS), Bowmen(1 slot - very weak ranged DPS (slings)), Man-At-Arms (2 slots - melee debuffs), Squire (2 slots -buffs), Knight Errant (5 slots - Tank)
Trees: Chivalry (buffs the Man-At-Arms and Bowmen), Honour (buffs the Peasant and Squires), Nobility (buffs the Knight Errant and the Player)
