The idea is that it may be worth allowing Premium Family for outside of household or be renamed household premium... my sister who is 16 still lives with my mother and I do not but would love to share my premium with her but can not so may not do the family as only one person will benefit (who is on a competing application free with phone plan) .
Updated on 2019-10-16
Thank you for all your feedback and votes.
At this time we do not have any plans to implement this, so we're setting it to Case Closed for now.
If anything changes we will update you here.