NHF – new heroes for Heroes V 3.1.

I'm still testing the previous version. I tried playing as Aglion. Around the 3rd month, I already had 1600 imps. In general, this is normal for the late game when playing as demons. But it feels a bit like cheating that mana increases in any case, even if the maximum threshold is exceeded. I currently have 1800 mana units, and with each battle, 90 mana units are added. Another question: The hero has the maximum skill level, and all 3 perk slots are filled for him. But at the same time, when leveling up, it offers to take another perk. Is this due to nhf or ewa?