Delete the flares already..

I agree with you. Flares should only mark the enemies that are within your team's line of sight. If you shoot flares over a building but nobody on your team can see behind it, the enemies shouldn't be marked. I feel that a rework is needed. The radius of flares are awfully large, and we shouldn't have enemies marked if they are hiding behind cover and nobody on your team can see them. For example, on Rotterdam there are large blocks of buildings that surround objectives. We shouldn't be able to see enemies behind these building blocks from flares. Similarly, there is no realistic purpose to using flares on Operation Underground. When you are defending a spawn objective on that map, you can fire flares and see the enemies marked out that are underground while the majority of your team is above and camping the exits. The most frustrating thing about flares is that when hiding behind tall coverage such as buildings, you remain spotted but cannot shoot the flare down because the building obstructs your vision of the flare.