When an app asks for permissions, the OS should not only let you answer yes or no. Every category should have a "yes, but feed the app fake data" option.
Want my contacts for no reason? Have these generated fake ones! Wanna listen to my microphone? Here's random ambiance sounds! Location? I'm on a ...
I like this idea! Would be cool if you coordinate the fake data to make imaginative fake profiles. One day I appear to be a Wagner mercenary, another day having deep conversations with Mo Rocca in a museum.