No. This isn't Call of Duty.
Agreed. You should use your head to tell if someone is a baddy or not. Not a compass marker that distracts you from the screen. In fallout you just had to look and see if they had a gun and were walking around/were raiders/slavers/any number of other bad guys that were established in the first 30 minutes of gameplay.
It did make it nice, but I don't know, I don't think it was necessary.