The first thing I do when I see a noe missions is call it out on the country channel. I don't see a problem with them showing up on the map if they are spotted
The key statement is, "when I
see a noe mission". Even with icons visible on a NOE target, I don't always notice it, especially if I'm engaged. My critique with the current "new" Radar is that the enemy AC shows up on the map if the game engines shows that the icon is visible to an enemy, not if the enemy actually takes notice of the icon. I understand the concept HiTech is shooting for, that of an integrated fusion of sensors (radar, eyes, ears) detecting, reporting, and collating contact reports, and disseminating a picture of the battlespace to friendly players. However, such a system actually should require that HUMINT only be included when the source (i.e. the player with potential LOS on the target) actively report the contact somehow to the air defense control center (ADCC).
My suggestion would be to require the player to "lock-up" the enemy icon, using a key-press that would operate similarly to the "Check-six" function; call it the "contact" function, perhaps. Press the "contact" key repeatedly, until it highlights the target icon, hold the key down for a second or two and release it. This transmits the contact info to the ADCC, and only then does it show up on other players' maps. So long as the reporting player remains in icon range, the enemy icon will remain on the map; once icon viz is lost, the map icon goes stationary on the map, flashes for 30 seconds, then disappears.