This is certainly doable depending on how we implement it, but it would take a lot of careful design work and planning to get right. If it ever comes down to having to rework the way loot works behind the scenes, we'll definitely be keeping systems like this in mind. Thanks for the suggestion!
Also, for what it's worth, we totally understand the frustration with not 'winning the lottery' as you put it. Staff have to put up with the same grind as everyone else, so we have a pretty good feeling for what it's like to never loot a legendary. wheres my yore