Actually I don't like tracers on CoD screensots, they look pale and even, I believe it should have some glow and a little bit variety, after all not all tracers burns exactly the same way. But I might be wrong if they look different in motion. I would love to see a dev video covering different types od tracers. I'm sure that some fancy gun cam video from CoD would make most of us drooling all over our monitors
Let's wait and see. No need to worry, if tracers will disappoint us I believe they will be replaced by modders witin few months
If moded IL Sturmovik 1946 can look like this, imagine how CoD will look with couple mods.