Doing 'fine' is a delicate way of saying you're not going to beat out the classes that can use an instant cast AoE spells see: Arcane Explosion. I attempted using Earthquake a few weeks just to see how well it worked out and it just didn't work out at all, it only procs spellweave on the initial cast. Chain Lightning even though not the best it did much better as long as you don't target the blood in the front of the pack (every one targets that one, it dies way too fast) target the blood in the backish and you'll be able to CL without having to swap a target.
On the Green (Ysera) platform if you stand on the far left of the platform you will be in range of both arm tentacles, this lets you Dual-Flame shock for more then just when the Mutated Tentacle is up. (Note: I found trying to keep up three Flame shocks was a loss of DPS because of all the target swapping to do so, not to mention the camera spinning)
Thanks for the CL tip - I was trying to tell whether EQ was worth casting there at all and I suspected it wasn't but couldn't really tell. I would find it very useful if there were a place to collect information like this about what people are doing to deal with specific mechanics. I feel like I'm starting to fall to the back of the pack as we get into heroic progression.
I can comfortably maintain 2-3 Flame Shocks and it sometimes seems possible to get 4, but then it really starts to interfere with fulmination procs for me. My personal sweet spot seems to be 3, while prioritizing the 3rd FS lower than maintaining my normal rotation.
No, those totems update on every shot/pulse with whatever stats you currently have. They are also affected by buffs you gain that don't help the Elemental at all (Concentration on heroic Majordomo, for example).
The elemental belongs to the totem, you cast the spell to create the totem and then the totem casts the spell to create the elemental. So it would appear to me that all of the totems behave consistently in parsing your character stats when they cast their internal spells, but the spell that summons the fire elemental is obviously only cast once.