In most cases, if a package is shipped without a default configuration file, this file isn't listed at all in the RPM (not even as a %ghost). Fix: Include optional configuration files in the RPMS as %config %ghost. For example, /etc/ld.so.conf should be included in glibc; /etc/modules.conf should be listed in modutils; /etc/rpmrc should be listed in rpm.
Change you for your suggestion. It has been noted and will be considered for future releases of RPM.