This is my latest totem loadout, I'd welcome feedback. I've only had a little bit of time in the BGs/Arenas, so I'm still on the fence about a few issues. I do not use a cast sequence mod, I simply have 4 keys bound for PvP totem dropping (U-I-O-P). I press them in that order, as well, so my characters drop:

Button U: 1-Wrath of Air, 2-Grounding, 3-Tremor, 4-Healing
Button I: 1-Poison, 2-Earthbind, 3-Grounding, 4-Tremor
Button O: 1-Tremor, 2-Poison, 3-Healing, 4-Grounding
Button P: 1-Searing, 2-Searing, 3-Searing, 4-Searing

My current tradeoffs/considerations:

* I run with 3xTremors and 1xEarthbind. This seems to give me good fear resistance (should be better in patch 2.4) and I do like having an earthbind down to deal with melee folks or mages who want to jump around on my team and mash arcane explosion. I think it's a good tradeoff vs. 4xTremor, but I'd welcome feedback here. Character "1" is my main, so I lay down staggered tremors with a /follower going first to avoid an easy wand/melee kill.

* I run with 3xGrounding and Wrath of Air. My guys are still a little undergeared, so I hope the extra spell damage makes a difference. I often drop a 4xGrounding mid-fight to refresh, so the WoA may not always be up. I'd love feedback about this choice, because I'm not sold on it and may just do 4x grounding. Also would like feedback on staggering these. My key concern is to get at least one down ASAP.

* I run with 2xPoison/2xHealing. I could see going to 4xPoison, since rogues are such a pain for me. I'd love input here!! This is the totem class I'm least set on.

* I have re-arranged my sequence so that the searings are all on the fourth button press. I used to have them staggered. Often times, I will just lay down 12 totems, expecting to need to use a 4xFire Nova drop on a melee. If I'm on the move, this gives me a chance to get totem protection up with 3 GCDs instead of a full 4, and I can still use 4xSearings if I have the time to lay them down (they are handy for extra DPS and pointing the way to nearby enemies I may not instantly see).

Anyhow, I'd love more feedback. I'm still very much getting pounded in Arena (due to my gear), so I'd like to at least have the best totem rotation going...