What might help better is having permissions that you can set separate settings that can be read for different apps (including the possibility to return errors

What might help better is having permissions that you can set separate settings that can be read for different apps (including the possibility to return errors instead of the actual values), even if they can be read by default you can also change them per apps. (This has other benefits as well, including possibility of some settings not working properly due to a bug, you can then work around it.)