Until the Legion expansion we had the nice bonus roll feature where you got a token once (or maybe twice? Cant remember) a week to roll an additonal try on any raid boss you killed and it was a nice way of getting a better chance on getting that one particular item you still needed and you could even save those and kill bosses you additonal looted this week and still spend that token.
Why were they removed and i really want them back cause chasing that one item that is far behind the others is just awful at least for me.