In my opinion. "Rolls" should come in mods, some extremely rare depending on the usability. Make them first column mods, second column, etc. Let us chase and farm these mods, and collect components alongside them, giving us reasons to kill a couple of dregs for certain parts, or harpies to make that fusion rifle accelerated coil work. We have so many slots for farmables, yet they're under used. Give us a reason to grind man.