It is recommended to have 2 single target healers in the gauntlet and 4-5 AOE healers for the arena.
Actually....there was very little difference in survival time with or without the extra dps (approx 3 mins). The middle group needs to give the gauntlet 4 solid mins as a conservative estimate. The arena comes down to add control and focus fire dps. I think the silencing of players had a lot to do with the lack of dps as well (commoners and thorim have silence/interrupts).
My suggested makeup (and this is only a suggestion):
Arena
Evoker: 162k health: Holy (T), Elrikk, Ana (silencing shot), Patty
Champion: 300k health: Tyr (T), Kail, Kar (can swap to warbringer for silencing shot if needed), Zu (mind control)
Warbringer: 190k health: Heiliger (T) Foroshell, Acoli
Commoners: 25k health: incidental damage deaths
Healers: Ug, Kalea, Marken, Lorgan, Tiz/Bralor (whoever has CoH)
Zu stay with hunters for ice trap when mc breaks-no dots should be on the mc target and should be out of aoe tanking/dps area. Healers spread out evenly where your tank group is located. keep champs out of group or disarmed. AOE healing. NR totems and hunter aspect to mitigate N damage.
Gauntlet
Tank: Orcala
Healing: Kadi (calls), Bralor/Tiz (whoever doesn't have CoH)
DPS: Jestin, Higgin, Drae, Evila, Druze, Zenita
On last boss, mage should sheep target then pull boss and blink back so orcala can pick it up. Non-CC'd adds must die before boss is dps'd. refresh cc's prior to running to thorim-do not break and kill, just get to thorim asap-we can kill them in P3.
K