DiabloFans

Witch Doctor sounds perfect by your description then. Like the necromancer, it will rely on pets early to perform as it's innate nuking power will be pathetic. However, as the game progresses you can use a build like: http://us.battle.net/d3/en/calculator/witch-doctor#VZTYgc!ZYd!ZaZabb to shift your focus off summons into a build that focuses more on raw damage as you build up your follower to tank for you.

In fact, witch doctors look like one of the best scaling classes with all the percentage modifiers it can obtain (20% + 50% + 20% + 120% + whatever atk bonus soul harvest gives you).