I seem to be the only one who thinks the circle sharing was a bad idea for most. The advantages on an early stage Google+ has allowed budding photographers to be noticed. The circle sharing has actually helped the big names, Trey Ratcliff, Colby Brown, etc., by giving them thousands of new followers. The mass of new users has made it hard for the little people to communicate and interact with the bigger names.
Why do you feel you need to communicate only with the big names?
Isn't the idea to get yourself more exposure? I would think you would want exposure with more than just the big names. Just my opinion!
Circle Sharing has been a benefit for a lot of people and not just the big names. But the only way you can benefit from it, or from G+ in any way is if you are actively posting and interacting with others, now matter who they are. If you just sit idle expecting people to find you and review your profile, you're more than likely going to get removed from circles due to lack of activity.