I have so many ideas for apps that would (currently) only work at a system level. I understand the problem with this is that people could write unsuspecting apps that delete all your saves or other system apps like the launcher or settings. My proposed solution to this would be integrating it into the permissions API implemented in 2.7.0. This would prevent apps doing malicious actions in the background, but I will also notice the problem with this; what if an app starts out fine but is set to become malicious after a certain amount of time. This could be fixed by adding an Allow Once option to the permissions popup.