I have a suggestion that might please the old-timers that went through the grind, and the newer/casual gamers (though they might still complain).

Make atma something that you have to grind for each zone. I don't know what the drop % is, but let's say it is currently 1%. Then make the specific atma drop after a player completes 100 FATEs with his/her relic at that zone. That way, the old-gen can't really say that the new-gen get it too easy all the time. And the new-gen/casual gamer can track progress.

I fall under the new-gen/casual gamer category, but I understand the "we had it much harder" attitude of some. But at the same time, from a game design perspective and a casual gamer perspective, I don't quite see the point of inserting this RNG element in this specific element to the game.