Thinking from an office point of view, a script built into the web-admin page that lets you build mrtg into your server and auto-magically sets it up for the interfaces you had e-smith install would be a brilliant idea.
If you could also build into the script a way to "re-build" the mrtg settings for when your've had to changed the interface configureation.... (ie. Gone from dial up modem to ADSL...)
Also I believe that tcpdump should be a part of the standard install for us consolers...

Marcus Giles