I'm sure everyone has discussed what their favorite expansion was considering everything that happened during it, but I haven't heard much about expansions from purely a lore perspective. So my question is, considering only the story line, how it moved the lore forward, and how well it immersed you, (even if you weren't much of a lore nerd before) and not the quality of the raid and leveling content itself, Which expansion was the best?
For me, the best expansion was wrath. Despite wrath carrying with it the biggest decline in challenge within the game, to me, it felt like pretty much every quest, dungeon, and raid you did was immersive and made you feel like you were helping the fight against the Lich King (who is up there with my favorite WoW bad guys).