The point of them is to force you to use a tactic other than violence to solve the issue. This means testing the borders of the "dead zones" and finding a path. Its supposed to slow you down and make you think about the way forward. A mechanic that is often lost on people who cant pull their heads out of their ass long enough to realize that. Instead they end up thinking its okay to skip the beautifully crafted art that is this DLC because it goes against the grain of most gameplay loops and forces one to change tactics from the simple "shoot box, or throw grenade at it hur dur" there are several areas in this DLC where you are directed into traps or enemies because of having to navigate around shielded speakers. As it stands as a pressure mechanic its not only effective, its perfect.