With his comments towards the Order of Tirisfal, Aegwyn having some minor roles in some recent developments, showing us both Archimonde and Kil'jaeden and further fueled with the speculations and hints towards Sargeras (and the fact that she defeated his avatar once already and it was in Northrend), I think we might see more of her in the near future. Any thoughts on this?

I just want to know one thing... Where are the Naaru?

It bothers me there isn't a single Naaru in Northrend.

Act 2 might be Arthas or one of his agents (Bronzebeard defecting!?) stealing some awesome Titan relic that he intends to use to destroy/enslave us all after we clear Ulduar. Of course with YS in the background templing his fingers saying "good... good..."

From earlier in the thread:

The only red dragons which are hostile are those around Grim Batol. In Night of the Dragon, it states that the red flight guarding the area eventually abandoned it because of the effects of the evil/corruption in the mountain.
They aren't exactly malevolent but perhaps saving us from ourselves or unleashing something worse.

I'm very interested to see how the story of Deathwing and his Twilight Drakes plays out. Obviously we have already at least impeded on his activities by defeating Sartharion and destroying the drakes in the Obsidian Sanctum, but as per NotD he could have many more eggs under Grim Batol.

The Twilight Drakes see themselves as being the new breed of "perfect" Dragons, it's not surprising they view Sartharion with contempt.

We're currently torn between a Uldum or Grim Batol divide for the "new, often requested instance" coming up

Technically A'dal, K'uri, and M'ori have a presence in Northrend.

My guess would be the naaru are more focused on the the threat of the Burning Legion. The Scourge, while a creation of the Burning Legion, is no longer affiliated with them. You'd think the naaru would take an interest in the enemies of powerful allies, especially considering that the Scourge invasion plague crates reached Shattrath City. Plus, the Alliance Scourge Invasion quest was to deliver a [Light-infused Artifact] to the faction leaders, which is a holy artifact created with the help of the naaru.

Hate to pull in Stargate Analogies again but the Asgard were unable to lend a great deal of help to earth during its struggles due to fighting an even more terrifying war that humanity had no real knowledge about against the replicators.

It's quite possible that there are hundreds of Naaru warships invested on battlefronts against the Legion and they're on the brink of internal collapse and the few naaru we see now are all that they can really spare at the moment to hopefully free up some allies from their(the allies) own turmoil in order to help the Naaru with the legion a bit.

Just do both ;-)

Uldum would be a nice fit to go with Ulduar together though.

This.

It also would work with the Titans should they decide to send a small party instead of the entire pantheon. It would aslo account for any "rash" decisions that could lead to a hostile act ot the mortal races.

If Blizzard really wants to follow through with adding a 5 man to go along with each raid zone (see: Quel'Danas), Uldum would be a natural choice, as I don't think there's really anywhere else to put 5 man instances near Ulduar, and unless there's something in the middle of the Maelstrom we don't know about, they won't get a better chance to tie Uldum into anything.

From the book:

I realize the post I quoted is from a month ago, but I just realized something relevant to this. Besides Vordrassil there is also Shandaral in Crystalsong Forest. And of course the entire forest is littered with Night-elven architecture. So there clearly is/was some ancient Night-Elf or Kaldorei presence in Northrend.

Granted it could be all the Kaldorei that were here were wiped out in the same blast that destroyed the Blue too. (I say could be, because it's really unknown if the Kaldorei were here before, after or "during" the event).

It could be Vordrassil was planted before the Sundering.

On a side note, has anyone deciphered what "Vord" means? "Rassil" = Crown, becuase "Nord" = Heavens and "Teld" = Earth.