Lots of communities include a box like this:
In fact, less than half of the pictures are identifiable as real people.
You can safely remove these boxes. They take up space and add nothing to the community.
Nobody visits a community, sees a bunch of unfamiliar faces, and decides to sign up.
If newcomers are likely to know existing members (for example, their Facebook friends), then this might make a difference. Otherwise, just remove it.
Far better to use this space to showcase just one member, well known personality, or a topical item people can get involved in right now.
If you want to master the social science approach to building successful communities, sign up for our Professional Community Management course.
Registration is open now. The course begins on April 28th.