In my long hours of grinding for a specific roll on the class item, I have had an idea to help perhaps mitigate the low odds of receiving a specific roll. Could some RNG protection be added into the grind by adding in something to increase the odds of getting a certain perk in a column, like how the ghost mods for armor stats work. Even locking the postulated ability behind an 'Expert Mode' of Dual Destiny, or have Xur charge some crazy price for a consumable or something of that sort would be better than the (from my experience and not at all proven fact) approx. 1 in 40 chance of getting a class item from a chest, with a 1 in 64 chance after that of getting the specific roll a person wants. A single run Dual Destiny takes about the same time as opening about 40 chests to get a drop, so the rarity balance is pretty on point, it is just, with very bad luck, the grind is pretty mind numbing.