Like I said I don't know much about Voidwatch, but just thinking off the top of my head, maybe a good fix would be to eliminate Rare/Ex stuff from the drop pool all together (leave sellable non Rare/Ex stuff in there) and just have some sort of points system, like Therion Ichor or Nyzul Tokens or something, so that every run is SOME sort of tangible progress. Even if you had to do 100 runs at Kaggen or something, at least that would put their minds at ease that it would ONLY be 100, instead of several hundred.