[tn13]

I think all apps should be given a choice to have ephimeral permission. For example I dont want someone to find an exploit in my app and steal my user's contacts.

I would only take contacts permission when I need and keep it for a short duration and then willingly give it up. User can be explicitly prompted.

Also, Camera and Microphones should have only this sort of permissions other than for those which are explictily whitelisted by Google.