i've been improving ftpd recently. here's a list of some of the
enhancements (over the ftpd in NetBSD 1.4):

	* connection limits
	* ftpusers(5): support allocation into specific classes based
	  on username, group membership, or remote hostname/address
	  (with globbing in each)
	* display (and log) transfer stats for each connection
	* configurable motd file
	* transfer rate limit/throttle
	* disabling of uploads
	* support for `%' escapes in files displayed to the user
	* manage utmp(5) entries
	* class templates, to simplify ftpd.conf rules
	* define hostname to return to client (makes setting a virtual
	  ftp server trivial, when used in conjunction with inetd(8)'s
	  ability to bind a service to a given ip address).

you can find more information in ftpd(8), ftpd.conf(5), ftpusers(5),
and in the example config files in /usr/share/examples/ftpd/

enjoy,
luke.