Honestly idk but I think it's because the newer system makes the gralat rate go twice the speed since there aren't that many gralats spawning side by side. That's why we can get reds and golds in 15 minutes to 1 hour now 0: It is fine for guild houses(if anyone even uses theirs) but I think they should definitely bring back the original old farming to the Grotto/Resort/Fan/Zone & other public places.