Thanks for that information Falko.
That does take care of the usual standard index page and the cgi scripts.
We install some other things on our "other server" like links to realaudio folders and phpmyadmin and httpd logs, a PHP info page, the always missing favicon.ico, images, a standard robots.txt page and so on. I guess I was thinking in terms of these kind of things.
Another way to do that might be a choice in the site setups to install custom content by running a user-defined script that could be configured in server settings. That would make it optional and entirely up to the server admin what, where, and if his content was added to a site... and give him total control over and responsibility for how it installed. And it could allow him to use the site setup vars such as user name, root directory and so on.
What do you think?