While a certain class of GNU/Linux users thinks so running Web or Xorg-based user interfaces is no substitute for the admin knowledge you need for running services properly. http://www.debianhelp.co.uk/pureftpweb.htm
lists some user interfaces but only for PureFTPd, all projects are rather old (most recent release of one of the projects is 2007!) and all require either PHP or Xorg (the latter apparently out of question since you already http://www.linuxquestions.org/questi...-gnome-784189/
). Similarly http://www.debianhelp.co.uk/proftpweb.htm
lists them for ProFTPd but I haven't even looked at those. As you discovered already there's no easy GUI for VsFTPd except the webmin module.