So I was just messing around with talent tree calc while waiting for launch and came up with this build:
http://db.vanillagaming.org/?talent#IqhiVoboVZbxVzg0o
What I would try to do with it is sacrifice Voidwalker for 3% health per 4 sec and use only Siphon Life, Corruption, Curse of Weakness/Tongues and Drain Life to just wear down opponents. And also use instant Shadow Bolt procs ofc.
Also it would be a build focusing on stamina + spell dmg gear.
Do you think this would work or is it impossible to sustain the damage from a Rogue or Warrior for example in this way? Was so long since i played vanilla that I can't remember if the burst is so high that defensive builds does not work