Any proclaimed prioritization of privacy or privacy improvements in stock Android serve only to bring your data more directly under the control of Google at the expense of other entities, so that those other entities must pay Google as a middleman to your data. On stock Android, there is no privacy - Google has access to everything, always.
In my opinion, one step that could reasonably be taken to improve the situation is for Google to go fuck itself, lose every anti-trust suit brought against it, and die.