I mean, they used an entire cinematic to introduce her into the game. She flies into the login screen every startup. We're supposed to believe she's a big deal. So why hasn't she done anything in the expansion? All she was good for was sitting on her ass sleeping, waiting for someone to prod her a bit so she will go "Raaah!"
From a lore standpoint, what was the use of resurrecting this dragon, and why should we have cared?