To keep witnessing the Operation : Shieldwall story, you forced me and my character into doing the dalaran purge quests. I didn't want to be part of that bloodbath, yet I had no other choice (or just keep farming dailies and stop all the story).
This is to Blizzard designers : you can screw up the story, the NPC's history, you can screw up balance, you can screw up loot RNG, you can screw up a whole lot of things and I will more or less keep playing.
But do NOT force my character into such an extreme behavior such as taking part in such an event, instead of just witnessing it. I am extremely attached to my character(s) and I strongly disagree when you leave me no other choice (to keep seeing the story) than acting against my morale. That's the most direct way out of the game for me.