Wait a few weeks before you decide, unless you really need the dust, let the meta develop, I made the mistake of dusting Rhok'delar when I opened it for the new meta. I still have a Golden Colussus of the Moon which I was going to dust, now have Turalyon, the Paladin legendary who I am waiting to dust, it's also Golden. You might might a deck that it works in. Just have fun with it for now, it will let you try decks that you normally wouldn't.
I'm not a fan of dusting legendaries. I got Golden Vessina back in Uldum and been keeping it ever since, waiting for a deck that would actually include her. The same with Golden Barista Lynchen that I apparently dropped during Descent of Dragons from some single rewad RoS pack. Coclusion, unless you're a very poor player, I wouldn't dust it. Since you got her in golden I assume you also have a few other legendaires to play with. Also that's the most fun thing of the first week of an expansion - trying to make something work. So, if I were you I would probably spend a lot of time tinkering with control DH decks.
I'm definitely leaning more towards waiting it out so I most likely will. The idea of using it in a cool DH deck makes me want to keep it (besides it looking real nice). Turalyon looks strong in that Duel pally that's making the rounds. You should try it out if you can.