I spent a couple thousand shards rolling for shoulders for my WW barbarian, trying to get the Death Watch Mantle, which I believe would fit well for my gear set right now, as I had a yellow shoulder, and as I have no hope of collecting set pieces being purely a solo player, and for a couple thousand shards I got blues and yellows. Then within two days she gave me a shit Vile Ward, shit Profane Pauldrons, shit Raekor's (yay for sets you'll never use), and only a so-so Burden of the Invoker (yay, another set I'll never use) which was basically a sidegrade at least so far, since my Overpower roll on it went from 15% to 10%.
So, first she's a bitch for a long time, not giving a single item, and then she rolls two legendary items and two set items, all of which are completely useless. Games designed on RNG are so frigging awesome. I wish I could thank whoever thought of the concept in the first place.