This would create a portal user type that cannot submit or vote on ideas but can access the portal to view all ideas that have been submitted. We have many types of users that we would not want submitting ideas, but the ability for those user types to look through and filter the list of ideas would be great.
The Ideas portal currently has a wide set of capabilities -- you can create submit only, private and public portals. At this time, based on community feedback and current priorities, we do not have plans to add another user type to allow users to only view ideas. We hope you can understand.