It would be great, if the squares on the map (and HUD) would be with different colors.
For example, the squad leader has a orange square, the second one is red, third is purple and the fourth is yellow.
This way you would see within a second who is where, without opening the big map and Mouse over every square to know who it is.
Additionally a direction indicator where the person is looking.
So we could tell him where something is. For example "tango on your 2 o'clock 50 meters out"