@
Thalassian Bob and @
MyWholeLifeIsThunder
Regarding the Purge of Dalaran, I still view it as an highlight of the Alliance experience, because it is one of the handful of times where the Alliance is allowed to strike back in kind to the Horde's agression, and the anger of the Silver Covenant, their hatred even, is perfectly understandable, and even justifiable.
The Sunreavers didn't just allowed the Horde to get the Divine Bell, an extremely dangerous artifact, which couldn't be stored in Dalaran in the first place because of the Horde's presence there (which they represented) and the already known affiliation to Garrosh of one of their member, who allowed Theramore's gates to be destroyed. No, the Sunreavers didn't stop there.
They also gave Garrosh the means to wipe out Theramore, which was the other largest concentration of High Elves remaining in the world. Sin'dorei may speak all they want about being the true heirs of the Quel'dorei and all that bullshit, that the Silver Covenant is full of enraged fanatics and what not. But it's them who helped Garrosh exterminate at least a half of the remaining High Elves. It's also the Horde who drove the inhabitants of Quel'Lithien Lodge to despair because of their constant raids, when they already suffered eking out a living in the Plaguelands, alone and cut offs.
The Sin'dorei as a whole and expecially the Sunreavers have a lot of Quel'dorei's blood on their hands, and it was great to make them pay, to make them feel the wrath of all those peoples whose lives had been snuffed out just so their new masters of the Horde could go on a rampage.
And don't come barging about Theramore being a viable military target and what not. Garrosh stated his goals to wipe out the Alliance on Kalimdor long before the Cataclysm. In Wolfheart, he was the one invading Ashenvale when no war had yet started, and Theramore answered to this first invasion. And no Horde leader ever came close to Jaina's actions toward peace. And yet, living in an horribel swamp, letting her own father and all his men be slaughtered by the Horde and doing her best for years to promote peace, even in the face of the horrors of the Undercity, earned her a mana-bomb in the face.
The Purge was justified, like the gunning down of those orcs sailors in the water. When your motto is "Victory or Death" you can't come crying when you lose and that the opponent give you death.