Valve announced a replacement feature for both Family Sharing and Family View. Currently in beta.
Features:
- up to 5 members
- game sharing
- parental controls
- allow access to appropriate games
- restrict access to the Steam Store, Community or Friends Chat
- set playtime limits (hourly/daily)
- view playtime reports
- approve or deny requests from child accounts for additional playtime or feature access (temporary or permanent)
- recover a child’s account if they lost their password
- child purchase requests
Doesn’t the offline mode solve this?
Achievements don’t track in offline mode, so not a perfect solution.
Only the parent can play while being online. Their two kids must be logged in.