I'd love to see BIS put this at the top of their fix list as it really does kill immersion.
Not everyone plays this game for hardcore milsim all the time, in fact most probably don't, and being part of a platoon on platoon sized engagement resulting in not a single tracer coming at you is just...boring. I'm fine with a tracer deadzone in the front arc (though personally, and from various evidence posted in the dozen or so threads on this topic, I think this should be a very small arc), but the complete lack of tracers when under fire by anything that you're actually looking at just doesn't make any sense. At the least give us a server side option.
On a side note, though perhaps more important to the ARMA "Big Picture", the huge tracer deadzone is extraordinarily counter-intuitive and harsh for new players to the Flashpoint/ARMA series. This is a game after all, it's best to error on the side of useful visual flair and give the hardcore players the option to remove it if they wish. Besides, this game turns away enough customers already because they feel a complete lack of situational awareness during combat, why make it even harder because of an incredibly obscure and questionably accurate "feature"?