Hi Cristi,
Thank you for using BuddyBlog Pro.

1. We will add the option to disable showing the already uploaded media(by the user), to them. We did it to allow them delete their own media if needed.

2. At the moment, we don’t have plan to have a custom Media Uploader. We will certainly consider it in future.

The BuddyBoss media uploader is a hardcoded uploader and can not be used with 3rd party plugins as of now.

3. The goal of BuddyBlog is limited. We control the front end editing experience. We do not interfere with default WordPress workflow on anything else.
If you want to have the attachments deleted on post delete, there are many plugins available.

You may use a plugin such as
https://wordpress.org/plugins/dx-delete-attached-media/
https://wordpress.org/plugins/autoremove-attachments/

Regards
Brajesh

I saw a solution to 1 at https://www.wpbeginner.com/plugins/how-to-restrict-media-library-access-to-users-own-uploads-in-wordpress/

 // Limit media library access
  
add_filter( 'ajax_query_attachments_args', 'wpb_show_current_user_attachments' );
 
function wpb_show_current_user_attachments( $query ) {
    $user_id = get_current_user_id();
    if ( $user_id && !current_user_can('activate_plugins') && !current_user_can('edit_others_posts
') ) {
        $query['author'] = $user_id;
    }
    return $query;
}