Bungo we need to talk you really don't seem to get your player base.
You say you removed crafting because you didn't want it taking away from the joy of random rolls but you can't remove what doesn't exist. There is no joy in your random loot just an endless stream of disappointment. We all know going in that there is only a ridiculously low chance of whatever roll we might be chasing dropping and that's when you haven't managed to weight them to never drop at all. The only way to avoid the misery is to expect nothing.
Removing crafting didn't incentivise us to chase random rolls. I am not interested in grinding your overlong boring repetitive recycled activities anymore for loot that doesn't drop (and I have 15,000+ hours or something insane in play time). What you did removing crafting was remove any reason to play at all.
At least with crafting there was a viable loop, suffer to get the red borders, craft, test and level the guns and grind for the materials to enhance them which took quite enough time. Adding in 100s of hours of even more grinding for rolls that may never appear was a step to far.
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Crafting is also an answer to the vault space issue. We don't need to keep 15 copies of the same weapons and armour if we can delete and re-craft them. Why not rework crafting? Instead of making you upgrade a weapon, simply allow the perks to be unlocked when you dismantle a weapon with those perks. If that doesn't work, why not unlock the perks based on the number of weapons you've deleted? Delete five Better Devils, you've unlocked the Explosive Rounds perk for Better Devils when crafting. Delete five more, you've unlocked Kill Clip, ect. This way you don't lose the "excitement" of a world drop. They still have random rolls and your "god roll" might drop before you even need to craft it.