Having 20 flaks mounted is very thoughtless anyways. Most kills of those ships are allied fighters. I doubt this modification would do any good, but would instead nerf flaks in supposed use (by energy or damage). Battleships usually mount 2-4 and those most often reach their target at the same time, all inflicting damage. What this modification would enable is to be effective with 4 plus flaks, but I suppose more often against your allies than the enemy. You have to predict where will your allies and your enemies will be when you fire flaks, and while many battleships might start mounting them en masse after this, a considerable portion of them will just press the fire button without any forethought.