The system of tags (Heads-up display Icons) in the game can be used for this purpose.
They can be set to appear at various distances and provide various amounts of information (plane-type, red/blue, plane number, pilot name etc).
Our group uses them all the time for ease of game-play. If you choose to go "purist" and not use them, perhaps you could turn them on for training flights.
We find they work well.