Experienced this first-hand today: Huge bummer since it prevents people from progressing in the Living Story, and also because the players who were just champ farming were rude and dismissive to the contingency who wanted to complete the event. Would it really have killed everyone to finish it once? With the number of players, it could have been done in ten minutes. And how fun can it really be to stand and wait for the champs to spawn over and over?