
Originally Posted by
Teriz
It’s not the only way. Infinite dragons could do it also, and they have plenty of reasons to do so.
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Yrel is a popular character, and I have a feeling that Blizzard wants a Draenei/light-based villain. In addition, we went to AU Draenor the first time because of time manipulating dragons, and in the current expansion, we're once again dealing with time manipulating dragons. Also Thrall fits the theme of a Light invasion due to his connection with the Mag'har.
It could be completely conspiratorial on my part, but I have a suspicion that Blizzard wants their new pet Morchie to do something dramatic and noteworthy, and pulling in the Light equivalent to the Burning Legion into MU Azeroth would fit the bill. We'll see soon enough.
Well, everyone's entitled to their feelings...