What is your opinion about Heroes IV?

In the fourth installment, the ideas in the battle mode are particularly well-executed (counterattack simultaneously with the attack, 1/4 of the attack power goes to the other end of the field, mana for creatures with magical abilities, the hero as a unit, potions, etc.)

In my opinion, the hero development system is also very interesting. Although, I am personally a little disappointed by the skill clones in different schools of magic: Spirituality, Demonology, Wizardry, etc., and accordingly Healing, Occultism, Enchantment, and the like. In principle, they could have added more differences, which would have added even more variety to the player's development. However, obtaining advanced classes already adds a lot to the game, to be honest.

The battlefield is somewhat awkward and it's inconvenient to calculate the cells.

It's inconvenient, of course, but everything comes with experience.