natd.plist editor/manager for OSX Server

The NATural was developed in response to my own need to configure NAT routing as an administrator of several Mac OS X Server systems. I quickly became frustrated with editing the natd.plist file each time I wanted to make a change. Furthermore, I was also annoyed that there was no quick and easy way to disable but save IP and Port Forwarding rules. Why couldn't configuring NAT be as easy as configuring the firewall?