Ah the old "realism" debate of icons/no icons. This old chestnut never really goes away.
I remember a thread from 2001 about it. I posted some information from my official USAF UPT T-38 Formation notes. Maybe Puma can chime in with some Formation Notes on viz from his career too.
"Approximately 1000 feet behind Lead tailpipes make black "figure 8" and tail numbers are easily visible but not readable."
What that means, for example, is that you can see the number 8; it's easily visible from 333 yards. But you can't tell if it's an 8 or a 3.
Here's the burner cans. They are about 2-21/2 feet in diameter I'd guess. Beyond 1000 feet they are just kinda a black oblong. Around 1000' you can see the narrowing between the burner can where they meet in the middle, thus the "figure 8".
So, can you see that kind of detail in AH or DCS at 333 yards? Because that's what a pilot would see in real life.
If you can't see that kind of detail in the games then that's....dare I say it....not
realistic.
Those of you asking for "no icons" are not asking for
realism per se. You are asking for a
game difficulty level.
Which is fine. If you want a higher level of difficulty just call it for what it is. But it's not "realism".