Unleashed Lightning Glyph was implemented because they realized that SWG won't work in PvE as a solution to this problem.
EQ is pretty lame spell, merely the Spell itself scales with haste and the duration is shortened.
EQ does the same damage with 0 Haste as with 10000 Haste, aside from the reduction of the 2sec cast.
"reworked"
Buff totems removed, few new utility totems added.
That's all, i don't call this a real rework.
But in terms of Elemental, Blizzard has a nasty habit of implementing important mechanics with patches instead of expansions.
Personally i would like to see a re work of Elemental because this tree is pretty much standing on the foundation of Wotlk, which is not the best ground in terms of Elemental dmg.