[Disable WordPress Plugin Updates] Other HTTP Requests not blocked

Would be cool if the plugin blocked any outgoing HTTP feeds such as popular tags on page
/wp-admin/plugin-install.php

Perhaps a white and a black list ?

We run WP in a DMZ with strict outgoing firewall rules, so any traffic is blocked and slowing down some admin pages

http://wordpress.org/extend/plugins/disable-wordpress-plugin-updates/