I beat it multiple times with my regular raid groups legitimately. I have also spent more time than I care to admit trying to help inadequate randoms. If I'm in a group of randoms and someone suggests it, I won't fight it. Why do I care if randoms aren't prepared when it gets patched? If black wax idols worked and you got sizeable xp (7500+) for the major checkpoints I would be more inclined to grind it out with randoms.