I think the best correction for the strong self healing would be to nerf warriors heart in redline somehow in a way that doesn't affect yellow/blue rather than tweak CAB. Would be pretty nice if it could lose the healing and function as a DPS buff for red although that might be wishful thinking.
Optimize the "Warriors Fortitude" trait to provide much better bonuses at expense of 50-60% reduced healing from itself. For example, increasing melee damage by 25%, critical chance by 10%, crit/dev magnitude by 20% while reducing the heal by 50-60%.