Interestingly enough, I feel the same mistake was made by Blizzard. They, having worked so long on it, clearly cared a lot about the story, the fate of Tychus Findlay and all that jazz. And they assumed that as we, the players, played the game, we too would become as attached and invested about those things same as them. Except, we didn't spend years building and developing these stories and characters. Hence, it's unsurprising that many players felt that the story of WoL lacked the emotional punch that the developers were claiming and seemed to believe the story had.
Sorry for the rambling. Not even sure if it makes sense.
