A couple of things: As has already been mentioned no icons in a “fantasy main” arena were everyone flies their favorite plane creates some major problems. I’ve flown with no icons in other sims and wasn’t overly impressed. The current AH graphics engine doesn’t really seem like the best choice for this kind of set up. Add to that the variation in graphics performance from PC to PC and I really don’t think it would work well.
What I have seen in other sims that did work okay was limited icons. For example;
3000 yds a +/- icon in a neutral color to indicate closure / departure
1500 yds +/- icon off and plane type and range icons on
400 yds all icons off
Now before we get carried away on the specific distances, they could be adjusted to whatever value most players could live with. The point is a logical sequence that does a reasonable job of representing the visual cues a real life pilot would experience. First departure / closure, then distance / plane type and finally use of the gunsite for ranging and aiming.