No.
I'm saying you are assuming a lot - all the changes discussed so far, plus a fundamental change in how the game is balanced (IOs instead of SOs,) and that most players will make these kind of builds to justify 600% as the de facto norm, as if they all know how, will do it, and can afford it, or are even aware of it to justify an intentional rebalance that the developers would agree with keeping that in mind as a goal.