1. Give monsters HP, defense, and attack stats as in Heroes 5. Because the monsters are currently very weak.
2. Give the characteristics names as in Heroes 5.
Strength - attack
Dexterity - defense
Intelligence - mind (it will affect the amount of mana, and also items-artifacts will not be suitable) + 10 mana per 1 point
Magic - wisdom
For each level, a hero can get a bonus to one of these characteristics.
Endurance - vitality, it increases automatically for each level. +10 HP per level, because there was no such characteristic in Heroes 4, otherwise all heroes will be very weak.
3. Spells can be learned in the Mage Guild, their power and damage, etc., will be as in Heroes 5. To use spells of one level, you need to pay.
4. Hero development through skills, as in Heroes 5, see the skill wheel.
5. Travel spells can be learned at a certain level, as in Heroes 5.
6. To create runes, gnomes need to be paid gold, and mages also need to pay for mini-artifacts.
I can be inspired to come up with more ideas if I am given the rights of a GM.
