Registered Aha users can review the idea prior to making it entirely visible to the public on the public idea board.
One option would be to create a private ideas portal so that the ideas can only be accessed by those who are part of the portal. Another option would be to leverage a submit only portal.
At this time, because of the current capabilities and current focus areas, we are unlikely to make changes in this area. We hope you can understand.
It would be nice if the user who submitted the idea could maintain a private thread with the admin before going public.
Another thing, ideally the public user who submitted the idea would be able to see the idea regardless of the privacy setting.
Ideal workflow:
1) Public user submits idea - default visibility to that public user & aha users only
2) Aha users review the idea prior to officially setting the idea visibility to public