Restriction Options for Profile Pages

Social Feature addon is active my website. Because I like the design of profile pages and I offer it to the users of my website. Moreover, for an admin, member directory is really useful. I could give access only for the admin to the member directory. However, for the profile pages, we couldn't do it. Restriction options for profile pages could be a useful feature. This is also a security issue. Currently, each user can access another user's profile if s/he is aware of another user's username because of URL (e.g. https://domain.com/profile/username) For instance, a user' profile page can be limited to access for admin and user own.