I prefer the necromancer myself but as long as the witch doctor has some cool stuff I can live with him. I still think there isn't anything quite as wicked as having an army of undead come to your command. I wish they would have toned down the flamboyant purple feather look. When I saw that I thought dear God that is artist formerly known as prince after he gets really really old. I'm sure though they will have other get ups for him.
I also didn't really care for the witch doctors critters, at least I didn't identify with them. If he's a witch doctor then he should be raising an army of zombies (and not just a wall of them as an attack) that follow you around all over and do your bidding, now that would be cool.