1] The ability to delete the errorlog imbeded in the server (that little window of text)
2] The ability to disabled output to the errorlog (maby give an option to either log to log normally, log to 'error.log' instead, or disable completly)
3] The ability to see the list of keys currently connected to the server (And possibly their IPs since some people insist on sending buffer overflow packets).
4] A bytes in/out meter on the server showing the ammount of data going through the server each second (extreamly usefull for 56k users).
5] The ability to hide the server to a small button on the toolbar (near the clock) (Very usefull for server hosts... they don't have to have a huge window button in the way all the time).