WordPress.org link: http://wordpress.org/extend/plugins/bp-group-control/
Buddypress.org link: http://buddypress.org/community/groups/bp-group-control/
If you have comments and/or suggestions, I regularly check these channels as well as comments on this site.
Note to anyone who downloaded the plugin before a few days ago – I had named the plugin root folder wrong. You can re-download the plugin, or simply change the name of the plugin root directory from “BP-Group-Control” to “bp-group-control.”