This is more of bug fix than a feature request.
At this time, any FAQ with a "Request Type" that is not visible to clients, can't be see by clients even if the Audience is set to "Everyone." I have multiple levels of request types for tech, but for clients, I only expose the top level. This make it friendlier to the clients when submitting a ticket. The tech then fills out the sub types based on the ticket. This works well for tickets, but for FAQs, it prevents the clients from searching for FAQs in those categories.
A client FAQ searches should include all FAQ marked as "Everyone" regardless of request type settings.