Problem would be drawing the trails from the individual GV's would be a huge hit on the system. That's what the simple icons are supposed to represent: the ability to accurately spot and track the enemy at realistic ranges beyond the capabilities of the game.
Like you said, restoring the 6K icon would solve many of the problems.
I don't know a lot of detail about graphic engines, but I would be curious how much processing power it would actually take. In simplistic terms, I don't know that it would be that much worse than the amount of craters an airfield can be covered in if a task group gets on it with guns for a while, or when a B29 unloads a full bay of the tiny bombs. I could be wrong, but I don't think it would be that horrific on your system. Like I said, the only tricky thing I can see would be making it so you couldn't "roll up" your 1000 yards of tracks under you by rocking back and forth.
I think the best things to add would be the visual things that were actually indicators IRL. Dust in motion, smoke on firing, and tracks. But I could be wrong and it might be too much of a performance hit.
But dear God the screams of the GVers would be biblical.
Perfect statement, right there. Not sure about the 6k icon thing. Were icons once visible 6k out?
Might've been 3. I remember when they were long you could see an icon, set up for it, and bomb him in one pass. TBH I felt it was unfair for the GVer. Problem is, with it as it is now, I feel it's too far the other way.
Wiley.