Add a loop function identical to what is used for presentations currently. That allows the user to set a time between slides and automatically loops between all of the slides in a item that is added via "Quick Insert".

Example: You click "Quick Insert" (lightbulb icon at the top of the Quelea program ). You title it "Announcements" and instead of verses you just have all of your announcements for that morning separated by a double break so they are each on separate slides. Then when you send the "quick Inserted song" to live instead of having a user page down through the slides they could set a loop of 10 seconds and each slide would show for 10 seconds and go to the next and then loop back to the beginning.