A suggestion, perhaps this would fit the CT arena the best, but anyways here it is:
Our current radar... ok well its 100% accurate all the time, it can be used for SA, and it has GPS built in...
To defeat the 100% accuracy, put a delay in. What you see when you call up the map is actually the aircraft locations of 1-2 even 10 minutes ago. To simplify its implementation: When a player hits the "map" key a SNapshot of the map is taken showing the contacts with heading indicators (with the delay)
As long as the player has the map open, he sees the snapshot, no moving cons etc, just the information as it was 5 mins ago for example. A refresh button could be placed on the clipboard, so that the player can get a new picture of the battle.
The delay, depending on coding issues, could be random, or an arena setting.
Just another gr8 idea.....
SKurj