this visual aid would track where bullets are going to land based off the current recoil of a weapon. in other words as the weapon is being fired there is a cirlce showing the current crosshair adjustment required. we all know bursting 3-6 rounds effects the crosshair placement for the next target. aiming on the enemy's head is only going to waste time and risk losing the engagement. i practice this but i believe using a visual aid would help improve aim during these intense engagements.
these two screen shots are great examples.
https://imgur.com/U3Y0VyV
https://imgur.com/QEUywT2