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

I would add the ability to upgrade all creatures!

I don't know, what's the point?:confused. It just wastes resources; it would be better to have 7 levels of creatures. This current system isn't the best idea. For example, in the Preserve. You have to choose between tigers at level 2 because elves are too weak. Or in the Academy, the same situation: you have to choose between mages and golems:(