Cast your mind back to Wrath--ask someone who started in that era who Ner'zhul is. Chances are they won't know.

Back in Vanilla, let's be honest here, both sides had terrible storytelling. The neutral factions stole everyone's lore. TBC was Horde-focused, but only for the orcs and Blood Elves. The Draenei were sidelined in their own expansion.

Then Wrath hit. People claim it was an Alliance expansion. It wasn't--it was a neutral expansion, same as Vanilla, it's just that the neutral factions stole our lore. And do you know what that ended up doing? It ended up meaning that both sides experienced the same quests as handed out by the same questgivers, instead of two concurrent stories to promote replayability.

Did the Forsaken ever get their revenge on Arthas? No. Did Sylvanas? No. She wasn't even there at the Citadel. It was Tirion Fordring and the Spotlight Stealing Squad that is the Argent Dawn.

It could all have been avoided so easily, though. Both sides could have had their specific factions, their specific stories--we could have had Dalaran and the Kirin Tor, saving all the uproar about losing even *more* lore to neutrality.

But what would the Horde get? Well, imagine how cool it would have been if the Forsaken had raided Naxxramas and repaired it, bringing it under their control. Then again, both sides need not be functionally identical (In this case, with one flying base apiece)--the Forsaken could plague Azjol-Nerub, and use the resulting army of undead nerubians against both Arthas and the Alliance.

Instead, when Blizzard writes a single story for both sides, we end up with a collectively broken suspension of disbelief. And when they write different stories for each side, they sacrifice one to get the other done.

We're the side that (a) has its lore stolen for neutral purposes instead of the Horde receiving their own stories, and (b) has its lore half-assed to get the Horde stories done. That ain't fair.