Melee classes (no primary) like Bulwark should either have pistol strike iframes as a class perk or native to the class as these classes feel far weaker without and can quickly take heavy damage being in the thick of it. Considering how a shield blocks and power sword strikes cause pistol strike cursors the removal of iframes make accidental pistol strikes a thing that punishes you by taking extra damage. Classes with mob clearing weapons don't need this but classes that are forced to rely on weak melee weapons like the power sword are not as effective as they used to be.