Indicate when location services were last used
The location services settings are supposed to give information about the privacy aspect of this feature. One crucial piece of information here is when the services were last used, and this seems like an obvious piece of information that's missing.
Showing when location services were last used would also help to give a more direct sense of location services as a living, functioning thing - right now you look at the panel and it's hard to know if there's anything going on behind the UI.
This could also be an opportunity to show if location services aren't available for some reason. For example, it could say: "Unable to contact location services for 3 weeks" as opposed to "Last used 3 weeks ago".