I'd be happy if restaurants quit over-salting their food, because I've had some bad experiences with it. I can't eat things that are too salty; it makes me desperately thirsty until the excess gets flushed out. >_< Conversely, it takes very little to run down the supply. When I work outside in warm weather, that little bit of sweating is enough to make me want salt. I'll come indoors, eat 3 potato chips, and be fine. Based on my observations of other people, I thought my range was much narrower, but maybe it's not that far off and other people are just less alert to their range.
Anyhow, efforts to minimize sodium in the body by manipulating diet are unlikely to work, as it is not controlled by diet but instead by biochemistry. I would say, try to avoid excessive salt, but don't try to force it down artificially low. Even with excessive salt, it won't stay put -- the body flushes it out. The documented range is really quite stable.