Ideas for the User group

Hello,

I was thinking of making a second authenticaed User type in which only people who actually participate become escalated to. I would dare to call this group "Core Members".

I'm not sure but people might not want to post work they did to the public.
Of course this new type of user would have access to all posts. Regular users who sign up will not be of this type of user and only have access to memeber posts.

This would mean any posts by core members would have a toggle if they wanted other core members to see, or everyone.

Throwing out ideas.
Anybody have any ideas on how to make the site more useful to the group, please let me know, at antoniovp@gmail.com

Antonio