You're giving precise information here no matter how big you make the circles. I agree with Andreas. You can't make an accurate, computerized location map without giving the most accurate information you have available, and you can't put it on the Web and then try to limit its access to people. I, for one, would love to see this type of map come into existence. I also share others' concerns about conservation, and I do believe that providing a powerful, accurate location map is going to drastically increase visitation to lots and lots of CP sites, by both the scrupulous and the unscrupulous.
People are basically lazy.
We're always looking for the quickest and easiest way to obtain the information and goods we want. So, if the location map becomes the easiest route, that's what we'll use. But if a database of alternative sources looks even quicker and easier, we'll use that instead. I think the same effort should be expended on providing a good CP-source database as on providing a good location map.