Was just reading a bit about plans for Xorg 7.3. The short version is no xorg.conf, completely dynamic. And possibly even hotplug for monitors.
This would be a great thing for Linux on the desktop. Good configuration tools are lacking and I have been desperately searching from something to replace system-config-display. It works ok, my biggest complaint is the dependency on things like rhpl and rhxpl. I guess I can live with that until Xorg 7.3.