Problems with Heroes of Might and Magic IV.

yes, when they introduced commanders into WoG as well - it became some kind of nonsense. in four, if it's not monsters, then it's heroes, but in WoG - it's unclear what it is.

I heard somewhere that something like a mix of four and three was intended there, and commanders are sort of "heroes". Personally, I'd rather play the original Heroes 3, SoD, only with new creatures and some added abilities.