I think we can narrow down the problem to lack of damage passives at low level for stormzon or %ED / %EWD.
Despite other devotion in zon are kinda similar, but storm tree alone are lacking of any base %EWD (or at least damage bonus to scepter) .
So this kinda made that storm-zon should be treated as class with flat elemental damage instead (i tried estatic frenzy but getting much worst recovery / block locked)
This lead to other damage source which only unlock at level 90 (curare and war spirit, & sov if want to count her aura)
She have free lightning pierce, but value is still lower than most of other class (summon djinn, euphoria) *add more if I missed anything else
Yes the passive is decent, but the synergies is way too weak IMO compared most of other passives.
I think she is fine as a caster because of stormcall is such as powerful spell with dual dmg.
Hammer of zerae is good level that thundercrack and magnetic field have to reach for low level.
Because it have 3/2 and godly amount of lightning damage. Not to mention multihit at each spot if it hit enemies
Thundercrack might need more dmg synergies, but less missiles (powerful at early, less snowballing)
Im playing at players 1 and I struggling to kill monster either with %ED scepter or %CB honorific scepter
If it really doesnt trigger on attack proc, it seem worst than other melee skill
As for magnetic field, I just dislike the super-low tick dmg and "casting at feet" mechanic.
I dunno how many hits the spell do at high level, but definitely way behind multi-hitter ranged class like wychwind throwsin.
Im experimenting with weapon switching at the moment, but it is really not worth the effort (compared to spamming HoZ and shift moving)
If you want some suggestion, here is mine:
1. Keep storm zon as melee with flat lightning elemental damage but with high bonus damage but weak weapon (scepter)
2. More synergies based of hard point DEX and ENERGY like holy melee / barb tree, sorc passive or sin's laserblade
3. Or hard point into passive boost lightning damage bonus greatly (like malice necro), this one Im taking of non-devotion amazon perspective
4. Just open up weapon requirement for storm-zon tree, mechanic, she not much better than other zon tree. Not to mention zon have slow animation list compared to other class (only good at 1hand swing casting atm)
*Batstrike is tricky, but she is powerful with good passive, not to mention she can goes various tree for utility.
Old dragonpally is still fun (I havent tried new one) except for mana problem despite spend all to energy)
Heck even bow sorc sound easier with variety of choice :
http://www.medianxl.com/t1339-shiva-the-bow-sorc**I tried so many masoschist build in the past. Usually you are not limited by tree design or itemization, so you can go creative way to solve the problem (unlike stormzon). Charmer druid, mine + starburst sin, poison flasher druid (and probably couple more).
***I still leveling up this WDM storm-zon (caster is fine despite lightning immune, players 1), hopefully thins become better. But atm, even with players1 setting, WDM playstyle really need a lot of help (except of hammer of zerae which is powerful)
EDITED:
1. Right now, my thundercrack deal almost same damage magnetic field per tick but both is kinda like only 1/10 of hammer of zerae. I can 1 shot normal mobs in terror easily but other two skill barely deal 1/5 of mobs hp. I maxed all 3 skill, so damage is purely different by skill mechanic (saying adding more dmg wont work here since hammer deal more dmg with 3/2). Really need to check if thundercrack and magnetic field is designed to be that weak at low level.
2. About my suggestion above, I didnt realized hammer of zerae have this energy factor bonus like a spell (instead of WDM based skill like most other skill, similar one is in throwsin). So hammer is good, but not for other 2
3. I still dunno if thundercrack can multiple hit (like maybe at least missiles count x 1/1 dmg) but because lack of dmg (above no 1 reason), it still feel very dangerous to go melee since my dps is low (hammer of zerae seem still deal decent damage). I will try test more with more damage source from other slot.