i think the bar should not actualy show in the square where you actualy are but from one of the ajoining squares .. that way the defenders get a 5 min Early warning but will not know exactly where it is comming from... or another way have 1 darbar to represent 9 grid squares...
also i would raise the so called radar height to 2000 ft and have no icons below 100 ft.. that would be a compromise for both schools of thought i think..
personaly i would have no icons until shooting range, and no dar bars..just dot dar tied into the base dar.
still love the game though