Duplicate a Multi-Site Subdomain

just 1 click ..and it duplicates ALL content, settings, css, plugins..

im looking for a plugin that adds a new link to Sites admin;

Edit | Dashboard | Deactivate | Archive | Spam | Delete | Visit | DUPLICATE…

it should copy ALL settings/configs.
and create a new subdomain instance in the existing Multisite

A quick edit option for |Delete|Visit|DUPLICATE seems a bit too tailor made.

Nonetheless, this plugin does exactly what you want with 2 clicks (on its own screen).
http://wordpress.org/extend/plugins/add-cloned-sites-for-wpmu-batch/