I've managed to stack +50% lightning skill damage, as well as 15% entangling shot and 14% chakram. That + lightning damage is insane, since every attack I use in this build benefits from it. There's actually two variations to this build, the one I posted a link to is my solo build. T3 is farmed fast by myself, and I rarely die even though my only defensive is vault. I've managed to ween myself off of smokescreen / prep and shadow power, at least for T1-T4. My sheet DPS after passives is about 260k, and my toughness is about ~720k.
Build 1, solo;
Generator; Entangling shot w/ shock collar. 800k crits from this is very common, plus it doubles as a CC, and triples as a trigger for my cull the weak passive.
AOE spender; Multishot, fire at will. Crits constantly for 1.2m - 1.6m, and it's actually almost good enough on T3 to take down champs by itself. If there's 4 or more mobs, this is the skill I use. I actually really prefer this skill over ball lightning, because it hits harder per hit, has a wider aoe affect, is almost instant AND it goes through waller walls.
Single target spender; Impale, ricochet. Even though grievous wounds has higher actual single target damage, because of my lightning damage this thing rocks. 3 or less mobs and this is what I use. If I've got my entangling shot up (which you should rotate between ES and impale, to make sure your passive is up), 2m + crits are constant. This skill burns through champs.
Big Cooldown; RoV, Shade. I don't use it just because it's lightning. Being able to cast wherever you want is a huge plus, and the 30 second CD is very bearable.
Second big cooldown; Companion, Wolf. He does awesome damage on his own, and is also a great party buff for 30% extra damage for 10 seconds, on a 30 second CD. Combine with RoV and a full hatred pool of impales, and you've got some insane burst damage.
Defensive Skill; Vault, Tumble. This skill is really clutch. Breaks jailer, and gets you out of every type of floor pool. The tumble rune is simply because more vaults = you live more.
Passives; Archery, Cull the Weak and Steady Aim. All DPS passives atm. Since my only disc spender is vault, night stalker isn't needed, and for T3 I don't need any more toughness.
Gear; My + lightning gear is Andy's visage, thunder god's vigor, and Wondrous Deflectors (crafted). Hoping to craft a nice + lightning ammy as well. My legacy gear ATM is my windforce, dead man's, nat's chest and boots, inna's pants and crafted ammy. I found a hellrack that lowers my sheet DPS by just a couple K, and it works just as well, so the life steal on my windforce isn't needed. I just prefer it because of the knockback =D (And I want to find strong arm bracers for the + dmg to knocked back enemies).
The second Variation of the build is for group play. I replace multishot with Chakram, boomerang. It gets higher crits, about 1.7m +, and it's a good enough damage dealer to be both my AOE and my single target spender. I then replace impale with Marked for Death, Contagion, to help the group's DPS even more.
That's my lightning build! It's very fast paced and fun, and I'm REALLY liking the + elemental damage affix. ATM I'm hunting for more + fire damage, to make a rapid fire and / or strafe build. Hope you guys liked it!