Re:tracers, I find that in the long run I'm better WITH tracers. However, I found that I improved faster by turning them off briefly. It really helped on that "instinct" and forced me to pick my aim points better. Now that I kind of have it, I turned tracers back on and my gunnery improved because now I had "instinct" as well as a real visual indicator.
Again, very debatable and very personal, but I think trying to "use the force" on and off by turning tracers off every once in a while is beneficial.
Not at you boomerlu, just some speculative questions...
When you fire without tracers, and miss (I'm fairly certain this happens, at least occasionally), how do you correct? How do you know if your lead was excessive, or not enough? How about whether your aim was too high or low, but your lead was perfect?
How do you "fix the miss"? Is there any information related to you that allows you to make an accurate assessment of your aim, and how to improve it (ie, I KNOW I missed because my lead was off, and I can to correct it by...). Or, do you just randomly decide to point somewhere else next time, and maybe you'll be lucky enough to hit? Without tracers, is it possible to lead too much, but decide to try leading MORE? Or lead perfectly, but miss high, and decide you've over-led the target?
When teaching kids to shoot rifles, review of the shooter's performance (by looking at the target) allows a realistic interpretation and the ability intelligently set a goal on how to improve (ie, you're shooting high, see? Try aiming at the bottom of the bulls-eye..."). Or "You're shooting all over the place! Settle down, and try to shoot consistently, and THEN we'll work on where your group placement is".
The closest thing we have in-game to the paper target is the tracers. If they go behind the target, you shot behind the target. If they go high, you shot high. The tracers give you feedback on your aim (good, or bad) where no-tracers only give feedback on good shots, and a big, empty "huh?" on the misses, which is vitally more important feedback to work with than the hits...
If I gave you a rifle, and you were missing the deer you tried to hit, would you fix the problem by shooting at a target that gives you feedback (a paper target, dirt on a hillside, or whatever) or fix the problem by shooting at something that gives no feedback, and adjust that way (how about a cloud, or a bird flying over, or a piece of cottonwood fluff gently floating on the breeze)? If you miss the bulls-eye the paper target or hillside gives feedback that you can use to improve. The others won't, so improvement is going to rely on luck rather than informed judgment.
If you take a quiz in school, would you like to know the results so you can improve for the test? Or would it be more helpful to keep the results unknown?