Why WOULDN'T this work? At 16 Blood Magic, Shadow Strike + Dark Pact = 151 damage in 2 Seconds. Add another second by casting Vampiric Embrace and it's 214 Damage. And you also heal for 113 Damage with that combo! Imagine if 4-5 Necros did this spike...
What I am thinking is...
6 Blood Necromancers, 1 Healing Monk, 1 Prot Monk
Blood Necromancers would have
2 of the Necros would have Soul Leech as their Elites, while 1 has Life Transfer, 2 have Offering of Blood, and 1 has Well of Power.
Healing Monk and Protection Monk don't need to follow specific builds.
Yes, I know my default build suggestions are likely crap, but do you think it could work?