Once you get good with server you can hand write those, and add your own funness.
Some stuff you better watch out on those, exp:
sv_minrate - Min bandwidth rate allowed on server. Default: 0 (unlimited)
sv_maxrate - Max bandwidth rate allowed on server. Default: 0 (unlimited)
personally I'd never set the sv_minrate to 0, or really less then 8000. And max, I usually keep mine around 30000, as VAVLe seems to like to limit that to the max anyway.