LaVa and Karnak,
If I understood funked's idea properly, It would not crowd radio messages. Let's put it this way. Instead of dot command, let's use the clipboard.
Clipboard real time info is only sector counters showing enemy cons 500+ AGL over friendly or contested land. Combine it with MANDOBLE's idea about static delayed Dot radar images. You ask for a Computer Generated radar report (not your fellow countrymen), your FE generates a Dot snapshot which shows Dots on a given moment, static image. Then you click a dot, and a message (either on the radio chat or a popup window gives you vector, and possibly altitude, to intercept). If you want to fly to a certain base, click on that base, and gives you heading and actual contidions of such airfield. If you want accurate real time Radar information, you need someone manning the country's Radar Station. There you have centralised war room.
So not cramped communications, but a closer simulation about actual information flow during WWII.
Cheers,
Pepe