My Question or Issue
I'm a user of the Family-subscription and can't understand why you want to track the location via GPS to continue offering me a "Premium discount"?
I pay for the family plan and it should not matter where my family lives. Will you cancel my account if my family gets too far from each other?
Some families don't live together, but they still are family. They might work abroad, study or like to travel.
If you wanted more individual accounts maybe you should have considered if you should introduce the family plan or not.
Don't force your customers to cancel their subscriptions.