What should be added to the top five from the previous installments?

I also think it would be nice to have both a warrior and a mage hero available in each town. For example, my favorite race is humans. But it gets a bit boring to always level up a warrior, because a human mage isn't very good (I do level up magic skills, but it's clearly less effective than magic for, say, a necromancer). Of course, this would probably require creating a new skill tree for the new type of hero. Otherwise, it's unlikely that a warrior warlock would benefit much from Arcane Wave and Dark Ritual.