Adding endurance costs to Rage would just hurt certain power sets. Some power sets can afford it but i know my Dark armor/SS tanker could not afford them. Why punish DA? Shouldn't SS work for all power sets equally.
Why pick Super Strength if you could pick a power set that increases Defence or resists or debuffs mitigations/defences etc if they do equal damage. Some are more offensive and some are more defensive.
Not a good change. Better to just allow it to stack only once and up the damage of some of the attacks in SS to comparable levels of other sets OR leave it as it is and reduce the damage buff a little, 60% instead of 80% for example. And remove the debuffs when Rage ends, its not needed and it is not fun.
