I am in the process of setting up my new team. 4 Dk's and 1 Priest. I dont know about the aura system yet but I assume speccing 3 dk's into improved auras would help the group. I plan on making my tank frost/unholy. The other 3 can be dps spec. If anyone has tips on how to increase the synergy using multiple I would love to hear. Unlock most 5 box dks, I dont need to focus so much on self healing talents. I have a priest to heal my guys.