So, what if you could use sniper rifles for marking enemies on the map like you do with binoculars? "But snipers already have binoculars", you say. Well, with this you could spot enemies and effectively and quickly use your gun if need arises.
Imagine this: Your squad is advancing on enemy positions. As they move, you scan the enemy emplacements and mark them for your friends.
"Take down the mg" your squad leaders messages,
You squeeze the trigger and the machine gunner falls dead. At the same instant, your squad emerges from cover and a firefight ensues. You take down targets as fast as you can. You see that the enemy is trying to flank your squad. You switch positions and aim down on this new enemy. A split second after signaling their location to your squadleader you open fire and pin them down, giving your squad enough time to counter them.
That is why, or something along those lines, it would be good if you could spot enemies with sniper rifles. The binocs would still be useful on the sniper so you could call down artillery. So, what do you think?