I did even more messing around with terrors etc since I am baffled at how players are claiming they are using more mana, and basically I keep showing the same results. I always use a Thaz BP and a wrist with the same proc (I am not sure these items make any difference worth consideration) and frequently use a weapon with an AE aggro proc on it. Casting one terror and one assault per mob is more than enough to hold aggro throughout an entire fight.
As far as mana goes, I am staying above where I used to be considering Terror of Kaezul basically gives a free terror for your mana vs the old terror system and even on the old system I rarely used four terrors per mob (if you need to, consider asking your groupmates to use their jolts, aggro is their responsibility too). Of course if Deflux or Sublimate gets spammed mana goes down rapidly, but these spells shouldnt be necessary for survival if doing on tier content. I still don't use spears regularly though because they seem incredibly inefficient.
I typically run WoN in groups as well and only use focus for raids, I don't know how big of a difference that makes in mana either, and as Otcho said, Vortex is constantly running no matter if it is a group or a raid.
Can a few other people post a run down of their typical spell usage? I want to try some out of the box (for me) spell sets to try and see what makes the best balance of damage/aggro and mana.
I think the difference is gear tbh.. I run with thaz bp as well, my mana is only around 5K, if I had 7K I don't think it would be a huge deal. Now I don't run with won in groups.. but maybe I should.
Anyway.. previous mob fight, say 3 mobs for sake of argument
Pull, terror 1 target 1
Switch target 2, terror 2
switch target 3 terror 1 again
Bring back to group, if group not AE'ing spam terror 1 and 2 on target i'm on to keep aggro. If group is AE'ing I occasionally switch off target to increase aggro on off mobs
New Fight
Pull Terror 1/assault 1 (same hotkey)
Switch target 2 Terror 1, assault 1
Switch target 3 Terror 1, assault 1
Bring back to group, cast terror again when old wears off, don't have to worry about first 2 targets at all now since aggro is set. So I just stay on the target i'm on (wonderful)
However, If I only cast terror on the target i'm on when it wears off other dps will steal aggro.. so, I lifetap occasionally through and vortex of death..
Now, there is no question, I prefer the way it is now to the way it used to be, just so much easier to keep aggro on multiples.. however I think I use more mana on the multiples because previously I often didn't have to spam any terrors on the adds to keep aggro, sometimes I did, depends on the group. The 3x mana cost not a big deal for a couple of fights but does add over time..
Now maybe I do lifetap more than necessary, but even if do bare minimum to keep aggro I still run out of mana a lot quicker than I used to. If i'm not running with a JB/Kei now, I'm essentially out of mana always.. if I do have it I'm oom a lot but it's bearable.
I think if I had 7K mana and FT 10 plus... it wouldn't be a big deal.. but most SK's are not close to that.