Well I mean the fact it's super RNG doesn't really make it better, if anything it's just worse. Sure it doesn't affect balance much because it's so rare but then, why? Why not just give tokens, and you can buy a guaranteed weapon after 20tokens, or if you find one before. And then you nerf the weapon, don't make it terrible, but make it like, tome level? Upgraded tome level on catchup patches?
The fact that a few guys somewhere will find a weapon that beats the best current savage raid weapon just by sheer luck is pretty dumb, even if it's only like 1 or 2 people in the entire population. And it's the kind of thing where raiders will feel like they have to do it, while also knowing they probably won't get it. Sounds like terrible design.
I guess at least the timing means they can take all that feedback and make it less shit for 4.0, possibly.