I didn’t have an issue with the core idea fo atmas, it works well. The issue I had with the OC implementation is the spawn rate of the needed fates. By the time I had the final one of the rarest drop, I had stacks fo the others. Why? Because the final arms dropped from a fate that almost never spawned more than once in a lockout.
I did the original atma grind in ARR and this took LONGER when the devs said it should be shorter as the drop rate was 20% on the fates. Back in ARR, you had a good idea when a fate would spawn but the OC was double RNG because you never knew when or if it would spawn.