For the motion sensor, it would be nice to have a HUD indicator, showing the location of the sensor on a mini map, showing the position of the tracked soldier(s). Having a general ping does very little to help, if you have no idea where the sensor is and what it detects. It just makes on paranoid and leaves one guessing. For reference, look at the Aliens franchise. The sensor has a screen showing incoming targets within a certain range, not should elevation, just distance. It gives some info, but never enough to make the situation too easy, but more than a beep. If just beeping, it might be nice to be able to place multiple sensors to create a perimeter, with at least an indication of which tracker is being tripped.