There is good pathfinding, the morale rules actually help you get out of fights you should lose before total destruction, and you find that units do what they are supposed to. I cannot tell you how much all this complexity improves the gameplay. The complexity comes in figuring out strategy with all these factors in play. The graphics are quite sharp but totally 2D. I think they rock, but people seem to like a 3d world. In the case of this game, a 3d interface would only hinder things.
Sound is good.
The best is probably the Magician's fireballs. A great rush and explosion. Very demoralizing if you are facing them, and a big boost if you are casting them. I don't think sound is a big factor in this kind of game, so long as it is decent. Kohan the basics,pump out mobs of horseman,swordmen,wizards, group mobs together.