- Move Login Screen (SDDM) and Boot Splash Screen to Appearance. All of the settings that uses the System Add-On Installer are in Appearance;
- Create a Login Behavior section in Startup and Shutdown for the the Behavior... section of SDDM);
- System Information is currently in the System Administration settings, however, viewing system information isn't the same as administrate the system. So, maybe a new section called Details with the System Information would fit better.