You are so wrong..Lightning bolt does 13k + crits with 5.8k gs + ......it is NOT low dmg depending on its cd and mana cost....lava burst with you so called ' badish ' gear does 11-12k crit ....haste is needed my ele shamans so they can cast LB and LightB faster ...chain lighing completly useless on a single target....BL should be combined with elemental mastery and trinkets if you own one ( to give you haste or SP ) ..you should always use FLAMETONGUE weapon cuz it increases your spell power...use lighting shield so when an AoE spell hits you , you get extra dps since you do not lose mana so fast.. ( at least not on one boss + there is thunderstrom which restores around 5-6k mana ) , when you get 4 pieces of sanctified frost whitch or only frost whitch , you MUST use FS > LavaB... because it increases your FL's duration by 2 ticks . therefore you should use earth shock after Flame shock ( immediatly after the CD ) ..use totem of wrath for extra sp and get glyph of the same ofc ..it give s you 30% extra spellpower from it than you would usually benefit..always put your totems underneath the boss so MDPS could benefit from strenght of the earth , and the boss could be hit by fire nova which is quite useful..other glyphs you should use are : Glyph of lighning bolt ( increases dmg of LightB) , glyph of lava ( your lava burst gians addionitial 10% of your sp ) , glyph of totem of wrath .. those are the major glyph,,,others are your to decide ( i use glyphs of : water walking , reincarnation , and lightning shield)..Talent tree is also elgible for you to see on other Molten's ele shamy guides... that is. hope i helped
Best regards: Pitajstaru