That'd be clicky, but it's on the right lines. A better way would be to come up with a smart grouping profile for apps that want reasonable common combinations

That'd be clicky, but it's on the right lines. A better way would be to come up with a smart grouping profile for apps that want reasonable common combinations. For example, "Standard application that can access your INTERNET". Give it a nice screen. "Standard application application that can USE YOUR CAMERA and access your INTERNET" would get a big question mark icon. For any app that wants any weird combination outside the standards, make it opt in like you say - one permission at a time. With each requiring a screaming skull and crossbones. If you did that, you could integrate more fine-grained permissions into a small number of supported profiles, and developers would be strongly discouraged from choosing anything outside that combination.