If the zones indicated by the maps that players have made are accurate to the atmas then Verdigris is too limited as is compared to others.
An anecdotal example is my personal experience of having 0 Verdigris while I had 5 of two other atma by the time I hit Lv.20 and mastered 2 jobs.
The issue is that this zone presumably only has 2 REAL Fates and 1 CE, with the added 3rd FATE being a pot FATE, which is its own issue. Part of that issue is that the timing for the pot FATEs tend to overlap unfavorably with CE FATEs elsewhere.
EDIT #2: AND the only CE attached to this zone just so happens to be the only one that has a manual pop presumably because it's also tied to the story. But this means it inherently has a lower rate since people have to "actively" go after it on purpose which is likely but not 100% guaranteed all the time.
- Verdigris = 4 Total = 1 CE, 2 FATEs, 1 Pot
- Malachite = 4 Total = 3 CEs, 1 FATE
- Realgar = 5 Total = 3 CEs, 2 FATEs
- Orpiment = 5 Total = 2 CEs, 2 FATEs, 1 Pot
- Caput Mortuum = 4 Total = 3 CEs, 1 FATE
- Azurite = 6 Total = 3 CEs, 3 FATEs
Verdigris is clearly the worse one here since as I explained the pot FATE usually loses out on priority over wanting to do CEs, obviously a player choice but it is already limited as is. And yet most of the others have 3 CEs for their zones, so again the player preference to always do CEs helps, and the one other that only has 2 CEs still has 2 additional FATEs anyway.
Just for added reference the ones that I did get 5 of are Orpiment and Azurite, surprise surprise
So again if we are assuming the player maps are accurate then the easiest fix would be to move the FATE near Log #18 over to Verdigris from Azurite, cause why in the world does Azurite need 6 when others have 4?
EDIT: I don't mean literally move the FATEs/CEs just the actual drop being applied elsewhere, if that wasn't obvious.