I have heard that one of the things that is great about 5 shammies is that some of the things stack... Totem of Wrath for one. But my understanding is that after the patch they are changing a lot of things, including changing totem of wrath to a simple +spell power buff with no +hit. I am not even sure if that totem will stack anymore. Does anyone know about this or other changes that may impact the viability of a 5x shaman team?

For example this would mean no more rotation on 5 Heroisms:



Finally, we have modified Heroism and Bloodlust to affect the entire raid. However, all affected raid members will be unable to cast or benefit from Bloodlust/Heroism for 5 minutes.

and

Bloodlust: Cannot be recast while caster has Sated debuff, and those with Sated debuff cannot be affected by it.