I didn't notice them being nerfed. Could you be more specific? So far, in forums and in the group, I often hear complaints about the overpowered neutral creatures, which is why many have stopped playing this mod.
That's right, because this overpoweredness is caused by the fact that the authors of these creatures didn't use an autobalancer, i.e., NOIADE - since this utility didn't exist at that time!

---------------------------------------------
Неудачное планирование ведёт к неудаче ...
NCF - мод, добавляющий дополнительных существ в HeroesV 3.1