This is the same thing I hope mobile OSes can implement. If I tell the system I don't want an app to be able to send notifications, I don't want the app to be informed of my decision, because then it will keep bugging me about it. Same thing about many other permissions such as contacts. Just mock the result. I know of some Android ROMs that can do that but I have no time to fiddle with my phone like that.

Sorry about the rant :P