It wasn't just the factions. Both secondary skills as well as spells were terribly unbalanced, from overpowered (Dimension Door, Town Portal, Logistics) to practically useless (Eagle Eye, Mysticism, Hypnotize).MattII wrote: Yeah, but at least it was just the factions that were unbalanced, not the whole concept of the game (the way heroes were done on the field in H4 was unbalanced in favour of them).
Heroes in H4 weren't nearly as unbalanced as you claim. In many maps hero power rapidly increases compared to creatures, thanks to vast amount of experience compared to the rest of the resources (gold and dwellings primarily). In low experience, high resource maps the tables would be turned.
It was very unlikely you could manage well without creatures especially at start. Usual army setup, I used at least, was three to five heroes with rest being creature stacks.
Biggest problem was low pricing of immortality potions (should be 3000 gold a piece). Retreating with heroes was way too easy, enabling hit and run tactics too much (though if you failed to retreat in time, game over).