http://www.grimtools.com/calc/vNQP4lZ6. I hit the roof of my knowledge i cant seem to improve. If you got any ideas please tell. Im softcore.
well, not a fan of “casters” and not even of the druid, so maybe i lack the knowledge 
but, as far as i know, maiven sphere should be either the lowest possible or the highest, the middle way is a no good.
Also work very well for reduce melee damage mostly (due physical resistance being more hard to stack up rather than any other resistance, did have ever had 80% of it? :p) or as safety layer for when your resistance are debuffed! (has u maybe know, 60% on your RES means double damage).
So if u consider it “worth” to have for mitigate physical damage, then u should focus on have more than 12/12, if just for safety purpose 1 point enough most of the cases (due the +skills bonus).
The global multiplier that reduce your damage hit very hard on it 
so, having it low or high help you to have this value low (best would be 22/12 ofc which give 0% of malus).
inner focus, u can remove 1 point from it, 1% spirit bonus is not a big deal while 1% OA normally is more important, so keep it odd for efficiency purpose and put that skill point elsewhere… like Nullification, which can remove auras from enemies or can be a “panic” button if u are bleeding out with several strong DOT types at once (not fun when u are going to die and u cant do shit because your pot is in CD :P) Also u run trozan set, u had a good CDR, so u can use it every 15 sec more likely with just 1 point.
Augment on rings/amulet are… mm sure? why stun duration? 30% is not a big deal anyway and most of the time, where u would want to “stun”, nope is immune :p, basically u just adding up aether resistance… so maybe switch with survivor ingenuity (not even hard to get, devilcross reputation), which augment 20% all damages (so not only light, but also cold in your case and 40% > 30%), stack more OA and DA in %, OA wise u re good, but more OA is never bad to have! For the loss of aether resistance u can always swap some component (like badge and amulet can use aethersomething which give you 16% aether resistance).
for devotion… humm have to think about it, but “hand of ultos” to me seems just OP, more likely for a caster build which had more % damage than flat on weaps (and that devo ability just have 55%), also… <1sec for retrigger it? sounds like a deal to me XD (also other devotion which usually are not up at 100% time should be consider… like the phoenix, ok the damages are off, but the absorption effect is not bad since it can stay up 100% time with 40% CDR, just have to know if is x every hit or not, but with that value i think is it, just like blast shield).
edit: *hand of ultos have even lower WD, around 20% kek mah bad!
- Not sure you need Wendigo Totem, with this DA and armor any hard hitter like Moose or Fabius should out-DPM the totem’s heal and you’ll have to run from under it. Never tested it though, so I might be wrong.