Witch Doctor Build I concocted last night for 40+ :O
Get Dogs (Rabid or Burning) & Gargantuan (Humongoid or Restless) on cooldown by respawning them, then in large hordes throw up Mass Confusion and Grasp. That way, Vision Quest passive lets you spam Acid Cloud for about 8 seconds from Grasp's Cooldown, and get Fetishes through Fetish Sycophants. XD
Gets tricky when minions die out though, lots of kiting involved until skills get recharged. Zombie Handler or Jungle Fortitude could be interchangeable, depending on builds. Overall I think it's pretty balanced