I was thinking about SS and about the only thing wrong with it is how rage works. It has some other things that beed a little work I am sure, but that us the major one.
I had an idea.
Make rage a no endurance toggle. It give you the to hit buff as normal, but the damage would scale like fury, but only for damage taken up to the current buff rage gives. As long as you are taking damage and for a time after you have that damage buff.
To be able to double stack it, you would gain a second damage buff based on current health percent. IE the lower your health the higher it gets to the cap.
If there must be a penalty for running rage, then it could be resist or defense debuff while you have it toggled on.
The idea needs some refining as the second damage buff may be useless or harder to get for some armors and OP or others or for brutes.
Its just an idea I had at work. What do you guys think?