I think for the Arcane Mage section you mean Arcane Explosion instead of Arcane Blast. Also, spirit walkers grace is every 2 minutes, not every 20 as you have Also shamans can drop their totems while moving, including searing which they try to keep up all the time. Also, they took out the perk that made it so frost shock wasn't on the shared cooldown.
Keep in mind too that while these may be instant cast moves, at times they could be useless, such as cone of cold requiring you to be near your target. Also, many of these things you can cast while moving don't do much, like shadow word pain, or ice lance without a proc, though this is better than having nothing.
As someone who is maining an ele sham, I'm not too worried. While losing lightning bolt hurts, I think between the shocks and unleash flame, we should be okay.