About this part, before installing Micro-G from the F-Droid store check the stable version in their website
Because F-Droid propose the last version available even if it is a preview release and even if the Unstable updates is not allowed (unchecked) into F-Droid options.
@flypig: can the Micro-G repo keeper flag as unstable the preview release in order to stop F-Droid of proposing a unrequested ubdate above stable version?