Remove RADAR and SECTOR BAR functions from airfields and replace it with EWR installations and Radar sites as map objects.
Airfields should only have the tower as visible spotters. 10 miles and under for enemy/friendly show as DOT-map regardless of height. Destroying the airfield tower destroys the spotters and DOT-map.
Early Waring Radar sites should be SECTOR bar only as they were during WWII. They should be similiar to any map object with several towers, several buildings, and AAA defences. Destroying the towers destroys the EWR. Standard rebuild times.
Radar sites should be a several radar domes/towers with several buildings and AAA defences. Destroying the radar towers shuts down the site. Standard rebuild times.
Airfield towers should be bombable and would have the same effect of destroying the current radar tower.
Having EWR and Radar allow map builders to strategically place them for effective radar coverages. It also makes the sites as strategy objects and completely independant of the HeadQuarters that is now tied to radar. It also addresses a gameplay issue of placing emphasis on HQ attack, and more on pinpoint attacks for EWR and Radar sites. In essense, it makes the game historical, and more interesting to play. It also addresses historical radar coverages if required.