People may have mentioned this, but the break bars seem more like a liability for controlling foes, at least in PvE. Compared to Defiance, it’s harder to inflict CC’s.
Any enemy with a break bar is completely immune to crowd control, including soft crowd control. This means that all those chill effects that the reaper has are meaningless against enemies with break bars. Yes, yes, it helps deplete the break bar, but this is far less useful on the whole than chill would be. With defiance, chill, blind, etc, still had effects.
Something like a 5 second stun, while good, doesn’t offset the complete immunity to all forms of crowd control.
Further, what I’ve seen a lot of in the beta is groups taking down the break bar of a large foe very quickly (i.e. a few seconds), then a much longer period the segmented grey break bar indicating pure immunity to CC. This, along with the brown break bar regen, made CC’s a complete waste.
How about this: during the blue bar, full immunity to all CC’s, even soft. After the foe is broken, until the break bar regenerates, allow soft CC’s to apply. At least then there’s a feeling like your chill, blind, cripple feel useful.