It's not quite as much for story reasons as it is for logistical ones. The raid starts in present day Dragonblight, heads over the Great Seas, and ends at the Maelstrom. The issue is that, unlike most raid instances, these are locations players can go visit in the world at any time. So we had to create instanced versions of them as settings for the raid. Because of this, we needed to put an instance portal somewhere. And due to the fact that the Caverns of Time locale fits with the rest of the story of the patch 4.3 dungeons, it seemed appropriate to put all the portals in the same place. |