Well guys, the whole reason I wrote this is because I was asked about Storm by someone and explained what I knew from my personal experience in a message. So I figured i'd copy+paste.
You all bring up good points, i've recently tried a crit build and crit doesn't work well with Tempest. But what I do know is Tempest isn't too bad with multiple mobs, I will admit that Chain Lightning and Ball Lightning works a lot better for multiple mobs.
Quote (spartaxhit @ Jun 20 2013 04:12am)
Your storm may be cool to play, but is she as efficient vs single mob as she could be vs group of mobs ?
I think maxing spirited is a waste, you gain what, 4 ponits instead of 2 if you put only 1 in the skill ?
I agree fly is "useless" unless you want to rush fast green dailys, with boss kill only, but sirroco rush is enough.
I personnally maxing all the skills from light three, mainly using light for single mobs / bosses and chain light for groups / bosses with spawns.
I also use the skills that knockback enemies (don't remember english name) just 1 point, this skill is also awesome against missiles / projectiles (Dr doom, don't like to take his energy missile back, his lifebar don't lie

).
Just 1 point, you don't search dps in here, just knockback.
I also aim for full critic costume (3%/2.8%/3.5% atm, working on the 150k for T4 before recraft T2 for 3+%) an will aim on 2 x edge.
Ias is also needed (at least on gloves).
You bring up a lot of great points and ideas, maxing spirit doesn't seem to be the best option, I know that now (lol) Touche.