So I mentioned this earlier in this thread but it took me 360 fates for all 12 atma. In the last 3 days, I just grinded all 12 atma again. This time it only took 190 fates. Maybe SE did already increase the drop rate? Or maybe I was just luckier. Regardless, grinding atma in a short amount of time is totally doable. Hours-wise, it took me <15 hours (I used 30 Gysahl Greens plus sometimes my choco died). Anyway, I'm sure SE will increase the drop rate eventually. I wouldn't be surprised if they did it with 2.4 but I'd say definitely by the time of the expansion.