In-flight radar has too much info already as regards planes in flight. No thanks. And yes, I can read Lasz; but since I've been willing to listen to your opinion...
I do like the feature mentioned, the "check-6" type highlight that would then transmit a spotting report on GVs, CVs, trains, convoys, and PT boats (subs and barges too, once they're added. The info could stay on the map display for 5-10 minutes, with a button to turn that info on and off on your clipboard. That puts the onous on the players to report stuff, without making it too time intensive (no typing required).
As a matter of fact, I like this idea even for aircraft. Give sector counters and friendly dots automatically on your clipboard while inflight (enemy dots available from the tower), and use the above system for passing exact position reports on enemy aircraft. Then, the only time you get a dot while inflight is when someone bothers to report it via this "check-6" type function. By this I mean a keypress to cycle through enemy a/c in view; when you release the key it send a position report on the highlighted bandit to HQ, which in turn places a dot on everyone's inflight map.
Yes, I like this. Again, it puts the onous on the players. If you see a bandit and want to engage it by yourself, just don't send a report. Run into a whole flock of enemy a/c, and report it so you get some help.
There...was that serious enough?