Sure would be nice to have a user selectable DPI setting. Also the Marshmallow theme engine is missing?
The UI tuner is only available long pressing the settings gear in the notification shade for a few seconds.
OK thanks I already have the UI system tuner enabled. What I want is to make a request to the developers to get these features on the next ota update.
Good luck with getting your request to Google or Motorola as they are the ones writing the code.