@Cr0-Magnon
You're right, the opponents are moving, but after seeing one you can tag them and everyone on your team will know where the opponents are. The markings disappear after a few seconds. You can see the map from above. Indoor mapping is possible with an external camera or your mobile phone: Google for simultaneous localization and mapping (SLAM). In combination with a magnetometer, you know the direction of view of all your teammembers.
I don't want to spoil your joy in playing, that's not my intention. But would this system help you? Because you interact more with your team by sharing information?