Certain sniper rifles such as the AWP and the Dragunov should have heavily reduced tracer visibility. Instead of the extremely visible smokey trail they have now, it should be a more toned down vapor trail as most rifles would have in real life. While not completely invisible, these less obvious tracers would help to give Recon more stealth options, while giving the AWP a much deserved buff to set it apart from the other rifles which previously overshadowed it.

Example of a vapor trail: https://m.youtube.com/watch?v=Vf1z12yo1h4&ra=m