We all have different reasons for using Graphene on our daily drivers. For the sake of usability I am slowly changing my mind about using sandboxed Google Play. Bear in mind my threat level is low. I think as long as I will use non-Google apps for my main services such as email, calendar, cloud storage etc. and use built-in features such as permission control, storage scopes and other, Google will be able to collect only small fraction of information as opposed to stock OS. I don't really mind that it knows who I am and in some situations it's actually important that it knows who I am, but at least I will know it doesn't peek over my shoulder by far as much as before. And that is an improvement, isn't it?