What would you change in Heroes of Might and Magic IV?

This will essentially be a return to the style of the third game. The fourth game is a somewhat different game in terms of its mechanics; if you analyze it, everything is quite well balanced, and the dispels and cancels don't allow you to use buffs for too long. Or you can apply curses. Overall, it's a decent development; it moved away from the third game's template, but it didn't get worse. Some possibilities were removed, but others appeared.