Yeah check it out and see if it preforms better! Ahh gotcha on the castsequence. It works well to lock in a certain aspect to the rotation then.
That was the idea to lock in that part of it and in long fights helps quite a lot. Thats also why you have a Alt modifier to burn off excess. I find when i get a Immo Aura and directly after that a Eye Beam you are stuck on 100% fury and burning off the excess is always nice with the modifier.
1st post updated with the new priority