What will Trag'Oul and the Necromancers do in reaction to this? The Prime Evil in the form of Diablo was just defeated, and the Balance of creation would clearly be tipped in the favor of Heaven. Does this mean the celestial dragon may target the High Heavens? Destroy the Angles to preserve the balance between Heaven and Hell? Would the Nephalem side with the Guardian of their world, or their allies in Heaven? Could such a conflict cause the remnants of Hell to pick a side; nephalem or angels?
Or shall our favorite and only dragon in the entire history of Diablo remain content to play amongst the stars, hidden from Heaven and Hell? Makes you wonder about the guardians of other worlds too.