You can still have a full legendary set themed around Aurene, and maintain the uniqueness of each. You can have one based on each stage of Aurene's journey... when she was in HoT, in PoF, during her battle with Kralk, when she ate "that guy" (that'd be awesome theme for a necro staff).
You can get really creative with it, and I have no doubt the Anet crew is creative... which means they got lazy, or were mandated by the top brass to take the easy road for lowest effort and highest profit margin.