BP Featured Groups adds on the Groups Directory the ability for site admin to select groups as being featured. The plugin includes a shortcode and a widget which allow the featured groups to be displayed anywhere on the site.
BP Fan Page is a simple plugin that gives group admin the ability to set the group to be a Fan Page. This means that the Group is labelled as a Fan Page and it turns into an announcement only group which means only the group admin and moderators can add new Activity and Forum posts. Other members can comment on these but not initiate a new entry.
BP Profile Shortcodes Extra maintains the features introduced in the original plugin, it provides shortcodes to display the username, display name, profile url, avatar photo etc. but in addition it provides the ability to display the users cover image and also a collection of cover, avatar and @username that allows a profile header to be created on any page in your site. You can either specify the member to be displayed or the shortcodes will display details of the user that is viewing the page.
The plugin creates an email blacklist area in the Dashboard>>Settings>>BuddyPress>>Options page allowing you to add the email domains you would like blacklisted. You can also set the rejection message and an extra message for the registration page explaining the restriction.