The App Permissions seem to be missing the crucial ability to deny internet access to an app. There are apps where network data connectivity is the problem. Similarly, I wonder if Google will have this permission setting capability on its internal applications. I know that I have a rather tightly worn tin foil hat when it comes to Google and the information they get, but the Xprivacy 'deny' list on my phone is a mile long, and that's with most of their apps frozen or forcibly pulled out, I find that Google's data access on the platform demands a tight leash, leading the 'privacy' and 'permissions' charge to ring of hypocrisy - "we'll make sure that only we have your location" doesn't mean much to me
The ability to block internet access would effectively block ads. On the plus side, there are plenty of firewall apps in the Play store (though they do require you to have a rooted device).