I think one of the reasons why this may not have worked like we expected it to is because when you want to find the personal photo setting, you are really talking about many settings (one for each group) whereas in the system settings, when you want to find a setting, you are looking for only one global setting. That's what makes it easy to search for global settings. I'm not sure whether IPS has included searching over group settings but I can see how it might be difficult to do so from a user interaction point of view.