maybey its an idea to use advertisements to promote people to join the community and join the ventrilo chat ??
here is a handy dandy manual for it.

http://forums.alliedmods.net/showthread.php?t=155705

a plugin to keep banned people out:

http://forums.alliedmods.net/showthread.php?p=532620

a map chooser / vote plugin maybey:

http://forums.alliedmods.net/showthread.php?p=1258816

AFk check to kick peopl afk ?

http://forums.alliedmods.net/showthread.php?p=708265

just some things that might be handy on the server